It depends on what animal you're talking about. Invertebrates like sponges and mollusks and insects have no skeleton at all. Sharks and their relatives have a skeleton made of cartilage. Fish and amphibians have bony skeletons.
Diatomaceous earth is made up of the skeletons of small animals.
Their skeletons tend to be on the outside
Coral reef
Aquatic animals are animals that live in water.
Aquatic animals. most of the time they say aquatic wildlife, very few will say aquatic animals
Internal skeletons are structural systems found inside the bodies of animals, providing support and protection for their organs. These skeletons can be made of bone (as in mammals), cartilage (as in sharks), or a combination of both. Internal skeletons allow for greater flexibility and movement compared to external skeletons like shells or exoskeletons.
2 easy rlly. the answer is .........
invertebrates
Animals have skeletons so they don't wobble about like jelly! Just like humans
Animals can have three types of skeletons: hydrostatic, exoskeleton, and endoskeleton. Hydrostatic skeletons are made of fluid-filled compartments that provide support, like in earthworms; exoskeletons are hard external coverings, like in insects; and endoskeletons are internal structures made of bone or cartilage, like in mammals.
Coral reefs.
Speciality of aquatic animals is that they can swim.