Which Water Animal Has A Shell On Its Back?

Which animal has scales on its body?

pangolinsThough many think of them as reptiles, pangolins are actually mammals.

They are the only mammals wholly-covered in scales and they use those scales to protect themselves from predators in the wild..

What is an animal with a shell called?

A shell is a hard, rigid outer layer, which has evolved in a very wide variety of different animals, including mollusks, sea urchins, crustaceans, turtles and tortoises, armadillos, etc. Scientific names for this type of structure include exoskeleton, test, carapace, and peltidium.

Do animals live in seashells?

Most seashells come from mollusks, but some do not. Most seashells on the beach are not attached to living organisms, but some are. … Most seashells come from mollusks, a large group of marine animals including clams, mussels, and oysters, which exude shells as a protective covering.

What is inside a sand dollar?

A sand dollar’s body has five jaw sections, 50 calcified skeletal elements, and 60 muscles. A sand dollar extrudes these mouthparts to scrape and chew algae from rocks and other surfaces to eat, then retracts them back into its body.

What lives in a conch shell?

The queen conch (Strombus gigas) refers to both the large, marine mollusk and its shell alone. Queen conchs (pronounced “konks”) are soft-bodied animals, belonging to the same taxonomic group (Mollusca) as clams, oysters, octopi, and squid. They live in shallow, warm waters on coral reefs or sea grass beds.

Which animal has a shell on its back?

ArmadillosArmadillo is a Spanish word meaning “little armored one” and refers to the bony plates that cover the back, head, legs, and tail of most of these odd looking creatures. Armadillos are the only living mammals that wear such shells.

What lives in a shell in the ocean?

Seashells are the exoskeletons of animals called molluscs, including snails, nautiluses, mussels, scallops and oysters. The biggest are giant clams, Tridacna gigas.

How are shells born?

As mollusks develop in the sea, their mantle tissue absorbs salt and chemicals. They secrete calcium carbonate, which hardens on the outside of their bodies, creating a hard shell. … When a mollusk dies it discards its shell, which eventually washes up on the shore. This is how seashells end up on the beach.

Which is the largest aquatic animal?

blue whaleNot only is the blue whale the largest animal to live on the Earth today, they are also the largest animal to have ever existed on Earth. A blue whale can grow up to 100 feet long and weigh upwards of 200 tons.

Which animal withdraws its body into a shell on sensing danger?

Shell: Animals such as snail, tortoise, and turtle are protected by a shell. When these animals sense danger, they withdraw their head and feet into the shell. Turtle shells can be very strong.

What animals carry their homes with them?

“Some of the animals that carry their homes on their backs are turtles, tortoise, crabs, and snails. These animals generally contain a soft body and hence to facilitate protection they carry their home at their back, these hard substances that are assumed to be homes are called shells.

What hides in a shell?

Animals With ShellsTurtles and Tortoises. Perhaps no other animals are as famous for their shells as turtles are. … Armored Armadillos. … Covered Crustaceans. … Clams and Mussels. … Shelled Cephalopods. … Shelled Snails.

What animal has the strongest shell?

Sea snail shellSea snail shell the world’s strongest material.

Why are there no shells on the beach?

As CO2 levels rise, the water becomes more acidic and the amount of carbonate (needed to make calcium carbonate — the compound that most shellfish and corals use to build their shells and skeletons) decreases. Eventually there is so little carbonate that shells or skeletons don’t form properly or can’t form at all.

Which animal moves slowly?

SlothThe Sloth is the slowest animal in the world and its name is actually a synonym of slow motion.