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"Deep Sea" is an affectionately labeled state of being attained by Navy Divers, but not all. To be Deep Sea you must be down for your brethren, drink like a fish, and fuck like a tiger among other more sinister things.
1. Conservation:
Deep Sea Diver #1:
"That skinny 19 year old kid slammed ten jagerbombs, then rawdawged three hookers, and then took a shit in the hotel pool all before the sun went down."

Deep Sea Diver #2:
"Damn, that mutherfucker is Deep Sea already...."

2. "If you ain't Deep Sea, then you ain't shit."

3. "That motherfucker is definitely not Deep Sea..."
by DEEPSEA5343 September 04, 2009
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Deep Sea- A common phrase which no one knows what its true meaning is, it is used in the dive community in a serious manner by people who tend to get erect around the same gender, but it is sometimes used in a non-serious, almost mocking manner by those folks who can't be bothered to care.
" Dude I just did 10 crossfit pulllups " , " Wow thats so Deep Sea." ( Serious )

" If you can't recite the entire dive manual, then I guess your not Deep Sea " ( Non- serious)
by notarmyairforce246 February 19, 2015
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