Well... it happens that the right waters for some of the seafood happens to be really cold, frigid and stormy! Did you know fishing for Alaskan King Crabs for example, ranks as the most dangerous job in the USA (Wikipedia reckons that one crab fisherman dies weekly during the harvesting season)?
I came across the works of Corey Arnold, who did a really nice job of documenting life on board a fishing boat. The journalistic value of the photos is high, and you almost feel like you've been on the boat during the fishing trip. The icy conditions and the camaraderie among the fishermen were plainly brought across in the photos. And yes, these guys sure have a great sense of humor too!
Check out his works in "Fish-Work Bering Seas" section of his portfolio at http://www.coreyfishes.com now.