Reptile.
Let me fix this answer. The sea urchin is in the echinodermata kingdom
Sea grass belongs to the Plantae kingdom.
the sea or on land hahahahahahahyah5
Plantae
Animalia
animalia
Sea sponges comes under the kingdom Animalia. They belong to the phylum Porifera.
Taxonomically, pigs belong to Kingdom Animalia, same as sea urchins and humans.
The turtle is a reptile, and all reptiles belong to the taxonomic domain of Eukarya.Eukarya covers all organisms in the Kingdom Animalia, as well as the Kingdoms Plantae, Fungi and Protista.
Kingdom: Animalia Phylum: Chordata Subphylum: Vertebrata Class: Reptilia Order: Testudines
It belongs in the underwater kingdom