Claim: Holothuria atra  is a species of marine invertebrate in the family Holothuriidae, phylum Echinodermata of the kingdom Animalia.
Evidence: Holothuria atra, commonly known as the black sea cucumber or lollyfish, is a species of marine invertebrate in the family Holothuriidae. Echinodermata Phylum: Animalia Kingdom: