Juergen Freund / Whitetip reef shark (Triaenodon obesus) at reef, West New Britain, Papua New Guinea.

Juergen Freund / Bignose unicornfish (Naso vlamingii) swimming past coral reef, West New Britain, Papua New Guinea.

Juergen Freund / Coral reef landscape with abundant whip corals, Blue sea stars and hard coral, North Sulawesi, Indonesia, October 2009.

Juergen Freund / Silvertip reef shark (Carcharhinus albimarginatus) Kimbe Bay, West New Britain, Papua New Guinea.

Juergen Freund / Tropical blue-ringed octopus (Hapalochlaena lunulata) hunting. Lembeh Strait, North Sulawesi, Indonesia.

Juergen Freund / Blue ribbon eel / Ribbon moray eel (Rhinomuraena quaesita). Lembeh Strait, North Sulawesi, Indonesia.

Juergen Freund / Schooling Yellow-ribbon sweetlips (Plectorhinchus polytaenia) surrounded by glassy sweepers (Pempheris schomburgki). North Raja Ampat, West Papua, Indonesia

Juergen Freund / Humpback whale (Megaptera novaeangliae) underwater, off Tonga

Juergen Freund / Schooling trevally / jacks (Caranx), Indo-Pacific

Juergen Freund / Portugese man-of-war / Blue Bottle {Physalia physalis} split level showing float and tentacles, Indo-pacific

Juergen Freund / Close up of fin of Parrotfish {Scarus sp} Indo-pacific

Juergen Freund / Big eye jack school just under surface (Caranx sexfasciatus) Indo-Pacific.