difference b/w holothuria & cucumaria?

 

• Cucumaria is a genus of sea cucumbers. Holothuria is a type genus of the Holothuridae.

• Sea Cucumber, scientifically known as Cucumaria frondosa. Cucumaria miniata is commonly known as the orange sea cucumber due to its striking color. 

Holothuria scabra, or the sandfish, is a species of sea cucumber in the family Holothuriidae. Holothuria atra, commonly known as the black sea cucumber or lollyfish, is a species of marine invertebrate in the family Holothuriidae. Holothuria belongs to phylum echinodermata. It is also known as sea cucumber and its surface has outgrowths on the body surface.