Juergen Freund / Coral spawning in the Great Barrier Reef happens every year in November 3 - 5 days after full moon, Great Barrier Reef, Queensland, Australia

Juergen Freund / Craig Humphrey and Katharina Fabricius collecting Porites coral head for Coral Life census, Great Barrier Reef, Australia 2008

Juergen Freund / Craig Humphrey conducting reef survey for Coral Life census, Great Barrier Reef, Australia 2008

Juergen Freund / Coral reef in the far northern outer Great Barrier Reef. Coral formations are streamlined because of heavy surf and waves throughout the year. Mostly (Acropora palifera) Queensland, Australia

Juergen Freund / Coral reef in the far northern outer Great Barrier Reef. Coral formations are streamlined because of heavy surf and waves throughout the year. Mostly (Acropora palifera) Queensland, Australia

Juergen Freund / Looking down through shallow water at Coral reef in the far northern outer Great Barrier Reef on an exceptionally calm day, Queensland, Australia.

Juergen Freund / Looking down through shallow water at Coral reef in the far northern outer Great Barrier Reef on an exceptionally calm day, Queensland, Australia.

Juergen Freund / Katharina Fabricius conducting coral survey with Acropora coral in front, Great Barrier Reef, Coral Life census, Great Barrier Reef, Australia 2008

Juergen Freund / Sea thimble jellyfish (Linuche unguiculata), Rowley Shoals, Western Australia

Juergen Freund / Sea thimble jellyfish (Linuche unguiculata), Rowley Shoals, Western Australia

Juergen Freund / Irukandji box jellyfish (Carukia barnesi) catching fish in its tentacles, north Australian

Juergen Freund / Sea thimble jellyfish (Linuche unguiculata), Rowley Shoals, Western Australia