Another type of human-made structure that can be used to date and therefore provide maximum ages for corals are shipwrecks, like the Gulf Oil shipwreck pictured here, sunk by a German U-boat during World War II.

Another type of human-made structure that can be used to date and therefore provide maximum ages for corals are shipwrecks, like the Gulf Oil shipwreck pictured here, sunk by a German U-boat during World War II. Image courtesy of Lophelia II 2012 Expedition, NOAA-OER.

Related Links

Lophelia II 2012: Background - Coral Growth Rates and Sizes

Lophelia II 2012: Deepwater Platform Corals

NOAA Ocean Explorer Gallery