That would be considered sea cucumbers.
This is true - oxygen is ccarried throughout the body by the water vascular system.
It's true that an adult starfish has RADIAL symmetry.
A sea urchin uses its many spines to protect itself, true.
The answer to this is sea cucumber.
Echinoderms have a network of fluid-filled canals that function in gas exchange,...
The type of interaction that occurs between the imperial shrimp and its host...
Characteristics of Echinoderms Echinoderms are characterized by radial symmetry,...
While a starfish lacks a centralized brain, it has a complex nervous system with a...
Starfish are fairly strong animals.They have a spiny skin that isn't very...
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