No. If you have found a hard rock with an animal print on it, it may be a fossil.
A sea shell may contain a dead animal but the shell itself is a protective covering that an animal made to protect itself.
sea snail
Sea Urchin !
Any sea animal with a shell
It's a sea urchin.
a turtle
Yes, a lobster.
Jellyfish, sea anemones, sponges, starfish, sea urchins, sea snails, shell fish, lobsters, crabs....
With any type of bivalve, if the shell is open before they are cooked and the animal is not alive, throw it out. And if the shell of the animal is still closed after it is cooked, throw it out.
The animal inside them. As the animal grows the shell must be grown to protect it.
A "Pearl Oyster" is a shell that is found on the beach, washed in by the sea, and is worth 1200 bells and are the most expensive shell in the game.
Classed as animal. Lives in shell stuck to rock. Hope that helps. If its for a school prodject try bitesize Biology