Just ask this guy, Steven Purcell, one of the world's foremost experts on sea cucumbers. Purcell: They're quite strange animals. They don't have any limbs, they don't have any eyes. They have a ...

Here are three of our most recent eye-catching ... ZooKeys The sea cucumber is also covered with tentacles and papillae, or fleshy protrusions, according to the study. The animal has 20 shield ...