05/16/2012 07:58 am ET Updated May 16, 2012

'Deadliest Catch': Captain Calls Coast Guard After Deckhand Has Convulsions (VIDEO)

"Deadliest Catch" (Tue., 9 p.m. ET on Discovery) highlights the very real dangers faced by the men fishing the Bering Sea for Alaska King Crab.

Tuesday night's episode featured a medical emergency onboard the Wizard after newbie deckhand Chris Scambler collapsed and started having convulsions.

At first, the crew assumed he was suffering the effects of severe dehydration, but when he started seeing double Captain Keith Colburn realized the gravity of the situation and called the Coast Guard for a Medevac. Something that no captain ever does lightly.

"Deadliest Catch" continues on Tuesdays at 9 p.m. ET on Discovery.

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