Methane hydrates are believed to form by migration of gas from depth along geological faults, followed by precipitation, or crystallization, on contact of the rising gas stream with cold sea water. (princeton.edu)
Once caught, the fish are bled and put into a mixture of ice cold sea water and ice, called slush ice, where they are stored until we reach the dock. (thegoodheartedwoman.com)
Nature delivers its own cryoprotectants: Organisms in ice - cold sea water produce antifreeze glycoproteins to prevent ice recrystallization. (sciencedaily.com)