Thursday, October 12, 2017

Sea Cucumbers engaging in things sea cucumbers do...



...and why are they called cucumbers of the sea? if anything looked so different from a cucumber, these guys would be it!

#seacucumbers

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The Controlled Emergency Swimming Ascent (CESA) and why the way you learned it might not work

In the article, How to Preform the Controlled Emergency Swimming Ascent (CESA) , the author describes how a diver that runs out of air would...