Deepest sea urchin
Last updated: October 4, 2017 at 2:07 am
7,250 m (23,786 ft) – Class Echinoidea (unknown species), Indonesia, 1951.
Posudin, Y. (2014) Measurement of Water Quality Parameters, in Methods of Measuring Environmental Parameters, John Wiley & Sons, Inc., Hoboken, NJ, USA. doi: 10.1002/9781118914236.ch20
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Jeffrey Gallant is the Editor-in-Chief and Records Keeper of the Diving Almanac. He is also a contributing editor of DIVER Magazine, and the scientific director of the Greenland Shark and Elasmobranch Education and Research Group (GEERG). Jeffrey started diving in 1982.