yes a dolphin does have one!
All whales have internal skeletons and are vertebrates.
Yes, they have endoskeletons. Seahorses' skeleton are inside their bodies so they would have endoskeletons.
Lions have endoskeletons because they are mammals and we are mammals.
we need endoskeletons because they hold us up. if we had an exoskeleton we would be covered by a shell
What materials make up the endoskeletons of most vertebrates
yes they do
yes
yes
Insects have exoskeletons.
Yes
In animals with endoskeletons, muscles surround the skeleton. In animals with exoskeletons,the skeleton surrounds the muscles.
An endoskeleton are inner skeletons that are composed of tissue that has become mineralized. Animals with endoskeletons are humans, monkeys, horses, birds, and fish.