Juergen Freund / Boat at surface tracking Nautilus movements with a mobile receiver, off Queensland, Australia, 2007

Juergen Freund / Richard Fitzpatrick releases Grey reef shark {Carcharhinus amblyrhynchos} after inserting transmitter into its belly, as part of the Coral Reef census, Lizard Island, Queensland, Australia, April 2008

Juergen Freund / Fred Gurgel organizing his algae / seaweed specimens, as part of the Coral Reef census, Lizard Island, Queensland, Australia, April 2008

Jurgen Freund / Jo Browne and Kade Mills use a cylinder cone shaped plankton net to sample gelatinous zooplankton for Coral Reef census, Lizard Island, Queensland, Australia, April 2008. Not released

Juergen Freund / Charlotte Watson snorkels down to collect sand which may contain polychaete worms, Coral Reef census, Lizard Island, Queensland, Australia, April 2008. Model released

Juergen Freund / Adult Christmas island red crabs migrating from forest to beach to spawn {Gecarcoidea natalis} Christmas Island, Pacific.

Juergen Freund / Adult Christmas island red crab feeds on larvae emerging from sea for migration to forest {Gecarcoidea natalis} Christmas island, Pacific.