they lay on their backs and use a rock to crack it
They float on their backs and lay the shell on their chest and hit it with a rock. (I wouldn't call it a prey but their food.)
There are many such hard shelled insects, mostly beetles.
Platypus eggs are not hard-shelled, like birds' eggs. They are soft-shelled and leathery.
no
The sea otter in "Island of the Blue Dolphins" likely used its sharp teeth to crack open the abalone shells to access the meat inside. Sea otters are known for their dexterous use of their paws and teeth to forage for prey, including hard-shelled invertebrates like abalone.
A hard-shelled sea creature that starts with the prefix "bar" is a barnacle. Barnacles are small marine crustaceans that attach themselves to hard surfaces, such as rocks or the hulls of ships, using a strong, adhesive cement.
bugs
The spiral shelled mollusk that many people know these days are the snail it is a spiral shell to protect this animal from its prey.
yes, hard shelled tacos are the traditional mexican ones, soft shelled tacos are technically not even tacos but burritos or enchiladas instead
Nuts are a hard shelled fruit.
A weevil is a black and brown spotted hard shelled bug. Weevils are well-known for being damaging to an array of crops.
There are two main types of snake eggs: hard-shelled eggs and soft-shelled eggs. Hard-shelled eggs have a tough outer layer, while soft-shelled eggs have a more flexible outer layer. Both types of eggs are laid by female snakes and are incubated until they hatch.