no
Well it would sure be hard to move on land with those fins of theirs, right?
coral
Some lizards like crocodiles, Birds, possibly some dinosaurs, some turtles,
It is very hard to breathe underwater without assistance from an air tank.
There are hard-shelled & soft-shelled. There are those that live in fresh water and those that live in salt water. Hope that helps. And there are those that are big enough to bite your finger off and those that aren't. hehe
Loggerhead sea turtles belong to the order Testudines and the family Cheloniidae. They are one of the several species of marine turtles and are known for their large heads and strong jaws, which are adapted for feeding on hard-shelled prey.
There are many such hard shelled insects, mostly beetles.
No, the difference in snout size between crocodiles and alligators is primarily due to their diet and habitat. Crocodiles have longer, V-shaped snouts adapted for catching larger prey in open water, while alligators have broader, U-shaped snouts suited for crushing hard-shelled prey in swamps and marshes. Both crocodiles and alligators can hold their breath underwater for long periods of time.
Platypus eggs are not hard-shelled, like birds' eggs. They are soft-shelled and leathery.
The shell covering the top of a turtle's body is called the carapace (say karra-pace).It is made of a hard substance called scutes.Some turtles do not have a hard carapace. The carapace of soft-shelled turtles and the leatherback turtle is made of thick skin.The shape of a carapace is not always the same:
Reptiles, particularly turtles, produce hard-shelled eggs that mature outside the mother. These eggs are typically laid in nests on land, where they undergo incubation until they hatch. The hard shell provides protection to the developing embryo from environmental conditions and predators. Other animals, such as birds, also produce hard-shelled eggs, but the question specifically pertains to reptiles.
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.