All animals have skeletons, unless they happen to be an invertebrate, such as a worm. Some animals also have exoskeletons, but that is still a type of skeleton.
The hydra does in fact have a skeleton. The type of skeleton it has is a hydrostatic skeleton where a coelom, or cavity filled with fluid, is surrounded by skeletal muscles.
Exoskeleton
Yes, a hydrostatic skeleton is a type of skeleton found in certain invertebrates that uses fluid-filled compartments to provide support and structure to the body. It relies on the pressure of the enclosed fluid to maintain body shape and movement.
The smallest animal skeleton in the world is believed to be the Barbados threadsnake (Leptotyphlops carlae), which is a type of snake. The skeleton of this tiny snake measures about 10-15 mm in length.
any mammal has an internal skeleton but bugs have an exoskeleton
that would be a exoskeleton. A exoskeleton is an external skeleton that supports and protects an animal's body
They have a type of skeleton called a hydrostatic skeleton. This type of skeleton is a fluid filled sac which is surrounded by muscles.
internal skeleton
Internal Skeleton
a sponge skeleton
it doesn't have a skeleton
an ant