Juergen Freund / Two Pearly nautilus {Nautilus pompilius} Sulu-sulawesi seas, Indo-pacific. Fills shell with water to sink and expells water to rise, lateral movement by jet propulsion
01098783
Juergen Freund / School of Barracudas in tight ball {Sphyraena sp} Sulu-sulawesi seas, Indo-pacific