Animals That Start With S: Names, Types and Verified Facts
Animals that start with S include the saiga, salamander, salmon, saltwater crocodile, sawfish, scorpion, sea lion, sea otter, sea turtle, seahorse, seal, serval, shark, sheep, shoebill, skunk, sloth, snake, snow leopard, sperm whale, spider, sponge, squid, squirrel, starfish, stingray, sturgeon, swan, and swordfish.
S is one of the most biologically diverse letters in the animal alphabet. It includes mammals living from tropical rainforest canopies to Antarctic waters, birds adapted for wetlands and snow, reptiles capable of surviving deserts and oceans, fishes ranging from tiny reef species to enormous sharks, and invertebrates with body plans completely unlike those of vertebrates.
Some S names describe one species, while others cover enormous groups.
Shark, for example, represents more than 500 species. Snake, spider, salamander, seal, squirrel, and sea turtle also cover multiple species rather than one animal. Smithsonian Ocean currently recognizes more than 500 living shark species, ranging from hand-sized deep-sea sharks to the whale shark, the world’s largest fish.
Several S names can also mislead readers about classification.
A sawfish is a ray rather than a shark. A sea lion and a true seal belong to different pinniped families. The animal traditionally called a starfish is an echinoderm, so “sea star” is the more informative name. A sloth bear is genuinely a bear, despite a historical name created when naturalists misunderstood its relationships.
For these reasons, there is no scientifically fixed number of animals that start with S. The total depends heavily on whether a publisher counts groups, species, subspecies, regional modifiers, domestic breeds, synonyms, and extinct animals separately.
Quick List of 60 Animals That Start With S
| Animal | Animal Group |
| Saiga | Mammal |
| Sailfish | Fish |
| Salamander | Amphibian |
| Salmon | Fish |
| Saltwater crocodile | Reptile |
| Sand cat | Mammal |
| Sand dollar | Echinoderm |
| Sand tiger shark | Fish |
| Sandpiper | Bird |
| Saola | Mammal |
| Sardine | Fish |
| Sawfish | Fish |
| Scallop | Mollusk |
| Scorpion | Arachnid |
| Sea anemone | Cnidarian |
| Sea cucumber | Echinoderm |
| Sea dragon | Fish |
| Sea hare | Mollusk |
| Sea lion | Mammal |
| Sea otter | Mammal |
| Sea slug | Mollusk |
| Sea snake | Reptile |
| Sea turtle | Reptile |
| Seahorse | Fish |
| Seal | Mammal |
| Sei whale | Mammal |
| Serval | Mammal |
| Shark | Fish |
| Sheep | Mammal |
| Shoebill | Bird |
| Short-eared owl | Bird |
| Shortfin mako shark | Fish |
| Shrew | Mammal |
| Sidewinder | Reptile |
| Silverfish | Insect |
| Skate | Fish |
| Skink | Reptile |
| Skunk | Mammal |
| Sloth | Mammal |
| Snail | Mollusk |
| Snake | Reptile |
| Snapping turtle | Reptile |
| Snow leopard | Mammal |
| Snowy owl | Bird |
| Sockeye salmon | Fish |
| Southern right whale | Mammal |
| Sperm whale | Mammal |
| Spider | Arachnid |
| Spider monkey | Mammal |
| Spitting cobra | Reptile |
| Sponge | Invertebrate |
| Springbok | Mammal |
| Squid | Mollusk |
| Squirrel | Mammal |
| Star-nosed mole | Mammal |
| Starfish | Echinoderm |
| Stingray | Fish |
| Sturgeon | Fish |
| Swan | Bird |
| Swordfish | Fish |
This is a representative quick-reference list rather than a claim that exactly 60 S animals exist. Current wildlife databases can reach hundreds of S entries once species, breeds, “southern” names, “spotted” names, “striped” animals, and extinct taxa are counted separately.
Mammals That Start With S
Mammals beginning with S include antelopes, cats, pinnipeds, whales, primates, rodents, insect-eaters, hoofed mammals, and some extraordinary ecological specialists.
Saiga
The saiga (Saiga tatarica) is a migratory antelope of Central Asian steppe environments.
Its large, flexible nose is its most recognizable feature, although the structure is highly functional.
The nasal passages help filter airborne dust during dry summers and warm and moisten frigid air during winter. The internal nasal structure can therefore be understood as an adaptation to seasonal temperature extremes and life within dusty open landscapes.
Saigas also undertake large seasonal migrations in search of suitable grazing and weather conditions.
Their conservation history has changed remarkably in little more than a decade.
The IUCN moved the saiga from Critically Endangered to Near Threatened in 2023 after major population recovery, especially in Kazakhstan. At the time of that reassessment, Kazakhstan held approximately 98% of the world’s saigas.
Kazakhstan’s 2025 census subsequently counted about 3.98 million saigas, showing how quickly the country’s population continued expanding. That figure describes Kazakhstan rather than a synchronized worldwide census.
The recovery remains vulnerable to disease outbreaks, extreme weather, poaching, and conflicts with agriculture.
Sand Cat
The sand cat is a small wild cat adapted to North African and Asian deserts.
Its pale coat blends with sand and rocky desert surfaces.
Thick hair covering parts of the feet protects the paws from extreme ground temperatures while also improving movement across loose sand.
Large ears contribute to detecting small prey such as rodents and reptiles in sparsely vegetated landscapes.
The combination of camouflage, sensitive hearing, and protected feet links its anatomy directly with desert hunting.
Sea Lion
Sea lions are pinniped mammals belonging to the eared-seal family Otariidae.
One of the easiest ways to distinguish them from true seals is the presence of visible external ear flaps.
Sea lions also have large front flippers and can rotate their hind flippers beneath the body, allowing them to walk much more effectively on land.
In the water, the powerful front flippers provide most of the propulsion.
Sea Otter
The sea otter is a marine member of the weasel family.
Unlike seals and whales, sea otters lack the thick insulating layer of blubber used by most marine mammals.
Their solution is extraordinary fur.
Monterey Bay Aquarium reports more than one million hairs per square inch, making sea-otter fur among the densest known in the animal kingdom.
Air trapped between those hairs keeps cold seawater away from the skin.
This explains why grooming is essential behavior. A dirty or damaged coat loses insulation efficiency.
Sea otters also have an important ecological role in kelp forests because they prey on sea urchins. Where otters suppress large urchin populations, kelp forests can persist more successfully.
Serval
The serval (Leptailurus serval) is an African cat associated mainly with savannas and grasslands near water.
Its proportions immediately reveal its hunting style.
San Diego Zoo Wildlife Alliance describes the serval as having the longest legs and largest ears relative to body size of any cat.
The huge ears help detect rodents moving through grass, including high-frequency sounds.
Long legs raise the cat’s head above vegetation and help power spectacular vertical leaps. Servals can jump more than 9 feet upward when attacking birds or other prey.
These traits work together during ambush hunting rather than existing as isolated curiosities.
Skunk
Skunks are small carnivorans best known for chemical defense.
Their black-and-white coat functions as warning coloration, advertising the risk before a predator approaches too closely.
A threatened striped skunk may stomp its feet, hiss, raise its tail, and turn its hindquarters toward the danger.
Spraying is generally a last line of defense.
National Park Service guidance reports that striped skunks can accurately project their strong-smelling defensive fluid for around 10 to 15 feet, depending on circumstances.
The fluid contains sulfur-containing compounds called thiols.
Producing replacement spray takes time, which helps explain why skunks normally use warning behavior before releasing it.
Sloth
Sloths are tree-dwelling mammals of Central and South American tropical forests.
Living species belong to two main families commonly described as two-toed and three-toed sloths.
Their famous slow movement is connected directly with diet and energy economics.
Smithsonian explains that sloths eat relatively low-calorie plant food and have metabolic rates only about 40% to 45% of the level expected for mammals of similar body mass.
Moving slowly therefore conserves scarce energy.
Long curved claws allow sloths to hang beneath branches with relatively little muscular effort.
Their coarse fur can also support algae, creating a greenish tint that contributes to camouflage among humid rainforest vegetation.
Sloth Bear
The sloth bear provides a useful classification clarification.
It is a genuine bear in the family Ursidae.
Its confusing common name arose because early naturalists mistakenly thought its long claws and unusual appearance linked it with sloths.
Sloth bears specialize heavily on ants and termites. Long claws break into nests, nostrils can close against dust, and missing upper incisors create a gap through which insects can be sucked into the mouth.
Snow Leopard
The snow leopard (Panthera uncia) inhabits high mountain environments across Central and South Asia.
Its gray-white spotted coat creates excellent camouflage against broken rock, snow, and shadow, which contributed to the nickname “ghost of the mountains.”
Large furry paws distribute the cat’s weight across snow while cushioning movement over sharp rocks.
Long hind limbs support powerful leaps, and WWF reports jumps reaching approximately 50 feet.
A very long thick tail helps with balance on steep terrain and can also wrap around the body for warmth.
Sperm Whale
The sperm whale (Physeter macrocephalus) is the largest living toothed whale.
NOAA Fisheries currently reports adult males reaching around 52 feet and 45 tons, although occasional individuals can become larger.
The enormous head can account for roughly one-third of total body length.
Inside it sits the spermaceti organ, a large structure containing waxy oil involved in sound production and focusing.
Sperm whales hunt deep-water prey, especially squid, using sophisticated echolocation.
The species remains Endangered under the U.S. Endangered Species Act after severe historical depletion from commercial whaling.
Star-Nosed Mole
The star-nosed mole (Condylura cristata) has one of the most specialized touch systems of any mammal.
Its nose carries 22 fleshy rays surrounding the nostrils.
Those appendages are covered with thousands of highly sensitive touch receptors called Eimer’s organs.
The animal lives mainly in moist soils and wetlands of eastern North America.
Instead of relying heavily on vision, the mole rapidly touches its surroundings with the star while searching for worms, insects, mollusks, and other prey.
Researchers have observed the nose touching as many as 12 objects per second.
Other mammals that start with S include sheep, shrews, sika deer, spider monkeys, springboks, squirrels, sugar gliders, and several seal and whale species.
Birds That Start With S
Birds beginning with S include shorebirds, owls, parrots, wetland hunters, songbirds, swans, raptors, penguins, and species adapted to environments ranging from deserts to polar tundra.
Sandpiper
Sandpiper is a broad name for numerous shorebirds.
Many use elongated bills to probe sand, mud, and shallow water for worms, crustaceans, insects, and other small animals.
Different bill lengths and shapes allow related species feeding in the same wetland to exploit prey at different depths.
This helps reduce direct competition.
Shoebill
The shoebill is a huge African wetland bird famous for a broad shoe-shaped bill.
It stalks slowly through swamps and papyrus wetlands before striking at fish, frogs, snakes, and other aquatic animals.
The large bill has a hooked tip and considerable crushing power.
Its body can remain remarkably still while the eyes monitor potential prey.
Short-Eared Owl
The short-eared owl is an owl of grasslands, marshes, tundra, and other open landscapes.
Unlike many familiar owls, it often hunts during daylight or around dawn and dusk.
Long wings allow low, buoyant flight while searching for rodents.
Its small “ear tufts” are feathers used in appearance and signaling rather than the actual ears.
Snowy Owl
The snowy owl is strongly associated with Arctic tundra.
Adults have dense feathering extending onto their legs and feet, providing insulation in cold climates.
Their plumage also varies with age and sex. Adult males can become almost entirely white, while females and younger birds usually retain more dark barring.
Lemmings form an important prey source in many Arctic breeding areas.
Swan
Swan refers to several large waterfowl species.
Long necks help swans reach submerged aquatic vegetation while feeding.
Large webbed feet generate propulsion in the water and help the birds gain speed during takeoff.
Most swans form strong pair bonds, although popular descriptions of universal “lifelong marriage” oversimplify the behavioral variation among species and individuals.
Other S birds include scarlet macaws, skuas, sparrows, spoonbills, storks, swallows, and sunbirds.
Reptiles and Amphibians That Start With S
S reptiles and amphibians include the world’s largest living reptile, marine snakes, desert vipers, salamanders, tortoises, cobras, and turtles.
Salamander
Salamander describes an entire order of amphibians rather than one species.
Most have elongated bodies, tails, and four limbs, although body form varies substantially.
Many salamanders depend on moist environments because skin plays an important role in respiration.
Some species also rely heavily on external gills, while lungless salamanders exchange gases almost entirely through the skin and tissues lining the mouth.
The group therefore provides useful semantic connections between amphibians, moisture, respiration, metamorphosis, aquatic larvae, terrestrial adults, and species that remain aquatic throughout life.
Saltwater Crocodile
The saltwater crocodile (Crocodylus porosus), also called the estuarine crocodile, is the largest living reptile.
Adult males commonly reach around 4 to 5 meters, with large individuals approaching 6 meters. The largest reliably measured animal described by the Australian Museum exceeded 6.1 meters.
Its physical adaptations fit an aquatic ambush predator.
The eyes, ears, and nostrils sit near the top of the head, allowing the animal to remain almost completely submerged while watching, hearing, and breathing above the surface.
A transparent nictitating membrane protects the eyes underwater.
The muscular tail supplies much of the power during swimming and sudden attacks.
Sea Snake
Sea snakes are venomous elapid snakes adapted to marine life.
Their tails are laterally flattened, creating paddle-like structures that improve swimming.
Some spend almost their entire lives at sea, while others still come onto land.
Many can absorb a portion of their oxygen needs through the skin, although they remain air-breathing reptiles and must surface.
Sea Turtle
There are seven living sea turtle species worldwide.
They are the green, loggerhead, hawksbill, leatherback, Kemp’s ridley, olive ridley, and flatback turtles.
Sea turtles are reptiles rather than fish.
Their front limbs have evolved into powerful flippers for long-distance marine travel.
Adult females still return to land to lay eggs, often traveling enormous distances between feeding and nesting areas.
A major global review reported in 2025 found that many nesting populations are now increasing after decades of protection, providing an encouraging conservation signal. Significant threats remain from fishing bycatch, habitat changes, pollution, climate change, and illegal harvest.
Sidewinder
The sidewinder is a desert rattlesnake named for its unusual locomotion across loose sand.
Instead of pushing the entire body against the ground at once, the snake moves through a sequence of sideways contact points.
That motion can reduce slipping and minimize contact with extremely hot sand.
Snapping Turtle
Snapping turtles are freshwater turtles with large heads, powerful jaws, and relatively reduced lower-shell protection compared with many more defensive turtles.
Because they cannot close themselves completely inside the shell, biting becomes an important defense when animals are on land.
In water, snapping turtles normally rely more heavily on concealment and retreat.
Spitting Cobra
Spitting cobra refers to several cobra species capable of projecting venom toward an aggressor’s face.
The venom is directed especially toward the eyes, where it can cause intense pain and tissue injury.
This defensive behavior allows the snake to deter a threat without requiring direct biting contact.
Other S reptiles include sand tiger snakes, skinks, snakes, sulcata tortoises, sunbeam snakes, and numerous species whose names begin with “spotted,” “striped,” or “southern.”
Fish and Other Aquatic Animals That Start With S
Aquatic S animals form one of the strongest semantic sections on the page because the letter includes sharks, rays, salmon, seahorses, sturgeon, swordfish, whales, and many marine invertebrates.
Salmon
Salmon describes several migratory fishes in the salmon family.
Many salmon are anadromous.
They hatch in freshwater, migrate toward the ocean to feed and grow, then return to freshwater to reproduce.
NOAA explains that juvenile salmon undergo smoltification, a physiological transformation that prepares the gills and body for the shift from freshwater to seawater.
Adult salmon later use environmental cues to return toward spawning rivers.
Pacific salmon generally die after spawning, while Atlantic salmon can sometimes survive and reproduce again.
This makes salmon an excellent example for semantic relationships involving migration, freshwater, ocean habitats, spawning, life cycles, physiology, predators, and nutrient transport.
Sawfish
The name sawfish makes these animals look and sound like strange sharks.
Scientifically, sawfishes are rays.
Their shark-like bodies end in a long flattened rostrum lined with tooth-like structures.
Smalltooth sawfish have approximately 22 to 29 rostral teeth on each side, according to NOAA Fisheries.
The saw contains sensory organs and can be swept through schools of fish to strike prey.
Sawfish have declined severely in many areas because the rostrum is easily entangled in fishing gear and because coastal nursery habitats have been altered.
Seahorse
Seahorses are fishes, despite their upright posture, horse-like heads, and prehensile tails.
Their reproduction provides one of the best-known examples of reversed parental investment among vertebrates.
The male carries developing embryos in a specialized brood pouch.
During mating, the female deposits eggs into the male’s pouch. The male fertilizes and incubates them before releasing fully formed young.
The prehensile tail helps a seahorse anchor to seagrass, coral, and other structures instead of fighting currents continuously.
Shark
There are more than 500 shark species.
They are cartilaginous fishes, meaning the internal skeleton consists largely of cartilage rather than true bone.
Shark diversity is much greater than popular images of large predatory species suggest.
Some sharks feed on marine mammals or large fishes. Whale sharks and basking sharks filter tiny plankton. Many deep-sea sharks remain relatively small.
Sharks occupy coral reefs, open ocean, polar seas, coastal waters, and the deep sea.
Shortfin Mako Shark
The shortfin mako is one of the fastest sharks.
NOAA reports swimming speeds around 45 mph, although speed records for wild fishes are inherently difficult to measure.
A streamlined body, narrow tail base, crescent-shaped tail, and muscular swimming system contribute to its high performance.
Shortfin makos prey mainly on fast fishes and squid.
Southern Right Whale
The southern right whale (Eubalaena australis) is the largest animal on this S list by mass.
NOAA reports lengths of approximately 43 to 56 feet and weights reaching 176,000 pounds, or roughly 80 metric tons.
The species is a baleen whale.
Instead of teeth, it uses plates of baleen to filter small prey from seawater.
Rough patches called callosities on the head develop distinctive patterns that can help researchers recognize individual whales.
Sturgeon
Sturgeons are ancient-looking fishes with rows of bony plates called scutes rather than ordinary overlapping fish scales.
Their skeleton contains substantial cartilage.
Many sturgeons grow slowly, mature late, and can live for decades.
Those life-history traits make populations particularly vulnerable when too many adults are removed before they reproduce.
Several species have also suffered from river dams, habitat changes, pollution, and demand for caviar.
Swordfish
The swordfish (Xiphias gladius) is a powerful open-ocean predator named for its long flattened bill.
NOAA reports individuals reaching as much as 14 feet and around 1,200 pounds.
The bill is used to slash and injure schooling fishes and squid.
Specialized tissues near the eyes help retain heat, improving visual and neurological performance when swordfish dive into cold deep water.
NOAA cites speeds of up to approximately 50 mph, placing swordfish among the fastest large marine predators.
Insects, Spiders and Other Invertebrates That Start With S
S also contains a large number of animals without backbones, including arachnids, mollusks, cnidarians, echinoderms, sponges, and insects.
Scorpion
Scorpions are arachnids, placing them in the broader group that includes spiders, ticks, and mites.
They have eight legs, large grasping pedipalps, and a segmented tail ending in a venom-delivering stinger.
Venom helps immobilize prey and can provide defense.
The medical significance of a sting varies dramatically among species.
Sea Anemone
A sea anemone is a cnidarian relative of corals and jellyfish.
Tentacles surrounding the mouth contain stinging cells called nematocysts.
These structures help immobilize small prey.
Some anemones also form famous partnerships with clownfish, which can shelter among tentacles that would sting many other fishes.
Sea Cucumber
Sea cucumbers are echinoderms related to sea stars and sea urchins.
Their long, soft bodies look dramatically different from the star-shaped or spiny appearance of their relatives.
Tube feet help many species move across the seafloor.
They commonly feed on organic particles in sediment, effectively processing seafloor material as they move.
Sea Hare
A sea hare is a marine gastropod mollusk and close relative of sea slugs.
The California sea hare can reach approximately 16 inches.
Its head carries sensory structures called rhinophores that detect chemical cues in seawater.
When threatened, some sea hares release dark purple fluid. The pigment is linked with the red algae in their diet.
Silverfish
A silverfish is an insect, despite the fish portion of its name.
It is a wingless terrestrial insect with a flattened, tapered body covered in silvery scales.
Silverfish often inhabit humid indoor spaces and feed on starch-rich substances, paper products, adhesives, and other organic material.
The name comes from the animal’s silvery appearance and fish-like wriggling movement.
Spider
Spiders represent an enormous group of arachnids.
Most species produce silk, although silk can serve many functions beyond making prey-catching webs.
Spiders use silk for egg sacs, shelters, safety lines, dispersal, courtship, and prey capture.
Venom is widespread among spiders and primarily functions in feeding.
Only a small minority of species present serious medical risks to humans.
Sponge
Sponges are animals.
Their stationary appearance can make them look more plant-like, yet they belong to the animal phylum Porifera.
Most are filter feeders.
Water enters through numerous small pores, moves through internal canals and chambers, and exits through larger openings. Specialized cells extract bacteria and tiny suspended organisms from the flowing water.
Sponges lack the conventional mouth and digestive tract found in many animals.
Squid
Squid are cephalopod mollusks related to octopuses and cuttlefish.
Most have eight shorter arms plus two longer feeding tentacles.
Jet propulsion allows rapid escape.
Many squid also possess chromatophores that change the body’s appearance for camouflage and communication.
Several species can produce bioluminescence.
Starfish
The familiar name starfish remains widely used, although sea star communicates the animal’s classification more clearly.
Sea stars are echinoderms rather than fishes.
They move using hundreds or thousands of small tube feet powered by a water vascular system.
Many are predators.
Some sea stars use their arms and tube feet to pull apart bivalve shells before feeding on the soft tissues inside.
Which Animals That Start With S Are Endangered or Threatened?
S includes both severe conservation crises and striking examples of recovery.
The saiga improved from Critically Endangered to Near Threatened after an extraordinary increase, particularly in Kazakhstan. The country’s 2025 count approached four million animals, although mass disease events and management challenges remain important risks.
The saola remains Critically Endangered and among the world’s least-known large mammals. IUCN continues to describe it as one of Southeast Asia’s rarest animals, and there is no reliable current population count.
The snow leopard is Vulnerable, with an estimated 4,080 to 6,590 animals in the wild.
The sperm whale remains Endangered under the U.S. Endangered Species Act and is still recovering from commercial whaling.
Sea-turtle conservation varies by species and population. NOAA recognizes seven species globally, and every sea turtle occurring in U.S. waters is protected as Threatened or Endangered under the Endangered Species Act. At the same time, a 2025 global review found encouraging recoveries across many nesting populations.
Sawfishes have experienced major range contractions, with the smalltooth sawfish now concentrated primarily around Florida within U.S. waters.
These differences show why a page should avoid assigning one conservation label to broad categories such as shark, salamander, snake, or sea turtle.
What Are Some Easy Animals That Start With S for Kids?
Some of the easiest S animals for alphabet activities are salamander, salmon, seal, shark, sheep, skunk, sloth, snake, spider, squirrel, and swan.
These examples also introduce major animal groups.
Seal, sheep, skunk, sloth, and squirrel are mammals. Salmon and shark are fish. Salamander is an amphibian. Snake is a reptile. Spider is an arachnid, while swan is a bird.
A slightly more advanced list could include saiga, seahorse, serval, snow leopard, sperm whale, star-nosed mole, stingray, sturgeon, and swordfish.
Domestic Animal Breeds That Start With S
Domestic breeds produce a particularly large S inventory.
Dog breeds include the Saint Bernard, Saluki, Samoyed, Scottish Terrier, Shetland Sheepdog, Shiba Inu, Shih Tzu, Siberian Husky, Staffordshire Bull Terrier, and Standard Schnauzer.
Cat breeds include the Scottish Fold, Siamese, Siberian, and Sphynx.
Livestock breeds include Saanen goats, Shorthorn cattle, Suffolk sheep, Sussex chickens, and many others.
These are valid animal names for a broad directory, although they should remain distinct from wildlife species.
A Samoyed and Siberian Husky represent different breeds of the same domestic dog species.
Frequently Asked Questions About Animals That Start With S
What animal starts with the letter S?
Many animals start with S. Common examples include seal, shark, sheep, skunk, sloth, snake, spider, squirrel, and swan.
What are 10 animals that start with S?
Ten useful examples are saiga, salamander, salmon, seahorse, seal, shark, skunk, sloth, snow leopard, and sperm whale.
What is a rare animal that starts with S?
The saola is one of the clearest examples. It is Critically Endangered, exceptionally elusive, and has no reliable modern population estimate.
Final Thoughts on Animals That Start With S
Animals that start with S form one of the richest and most varied groups in the animal alphabet.
Familiar names such as seal, shark, sheep, skunk, snake, spider, squirrel, and swan sit beside animals with far more specialized lifestyles. Saigas condition frigid and dusty air through enlarged nasal passages. Servals detect rodents with enormous ears. Sloths conserve energy through remarkably slow metabolism, and snow leopards use broad furry paws and long tails to negotiate steep mountain environments.
Aquatic S animals add even greater diversity.
Salmon move between freshwater and marine environments during their life cycle. Seahorse males carry developing young. Sawfishes belong among rays. Sea otters depend on exceptionally dense fur, and sea turtles connect tropical nesting beaches with feeding grounds spread across entire ocean basins.
Several common names also reward closer examination.
Sea lions and true seals have different locomotor adaptations. Starfish are echinoderms rather than fishes. Silverfish are insects. Sloth bears are bears. Sawfish belong to the ray lineage.
Readers following the animal alphabet can return naturally to Animals That Start With R or continue with Animals That Start With T.
