Want this question answered?
endoskeleton i believe
The answer is NOT "They have an endoskeleton"~ (plato)
There are 5 main characteristics of a sea star: -spiny skin, -5 part radial symmerty -internal skeleton (endoskeleton) -a water-vasular system(breathing) -tube feet (suction-cuplike)
Sea Stars otherwise known as Star Fish are Echinoderms and they do not have an exoskeleton, they have an endoskeleton.
Bananas!
Sea Cucumbers.
world just kidding not the answer
The endoskeleton
Are made of hard material ( bones and cartilage ) that are inside the body.
Spiders have exoskeletons and also a small endoskeleton of plates made of a cartilage-like material.Spiders have exoskeletons and also a small endoskeleton of plates made of a cartilage-like material.
Endoskeleton
Endoskeleton - their bones are inside their body