Blue button
Animal
Porpita porpita, or the blue button, is a marine organism consisting of a colony of hydroids
found in the warmer, tropical and sub-tropical waters of the Pacific,
Atlantic, and Indian oceans, as well as the Mediterranean Sea and eastern Arabian... Wikipedia
Scientific name: Porpita porpita
Phylum: Cnidaria
Class: Hydrozoa
Domain: Eukaryota
Family: Porpitidae
Kingdom: Animalia
Order: Anthoathecata