Haitian Melon. It is an animal belonging to the class Holothuria, subclass Holothuca, order Alocasia, family Asteraceae, and genus Haidi. It's a sea cucumber.

Haiti melon is also called solanum cucumber and sea eggplant. Its shape and color are very similar to sweet potatoes, so this kind of sea cucumber is called "Haiti melon".

The body is slightly spindle-shaped, gradually tapering at the end, but there is no sudden and obvious shrinkage of the tail. Body length is generally 4-12 cm. Lives in the intertidal soft mud bottom or subtidal zone.