A beautiful Tubulophilinopsis reticulata sea slug secreats slime over its body to dig itself into the sand

sea slug tubulophilinopsis reticulata tubulophilinopsis gardineri tubulophilinopsis lineolata tubulophilinopsis pilsbryi headshield slug cephalaspidea bubble snails euopisthobranchia bubble shells marine gastropods bubblelike shells opisthobranchs euthyneura carnivores polychaetes bristleworms foraminiferans chelidonura aglajidae heterobranchia tectipleura gastropoda mollusca snail snails marine snails slugs shell less colourful cute animal amazing animals animal behavior underwater life marine life ocean scuba diving scuba diving wild wildlife ocean conservation marine biology nature underwater underwater world animalia blue ocean