John Seach, Volcano Live

 Calypso Mound Volcano - John Seach
Bay of Plenty, New Zealand

37.64 S, 177.10 E
summit elevation  -167 m
Submarine volcano

"Calypso Mound is a white anhydrite cone some 6-8 m high, 
formed at 167 m depth by discharge of thermal waters at the ocean floor.
It was discovered in February 1987 using the diving vessel Soucoup carried on the RV Calypso.

Calypso Mound Volcano exhibits strong hydrothermal activity.
 

Calypso Mound Volcano
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