Hi,
I'm diving in cool water for the first time 55 degrees. I'm only doing two shore dives in the kelp. I have a 3mil full suit, gloves and plan to get a hood. Do you think that will be warm enough? I can dive in 83 degree water with just swim trunks for one hour and not get cold. Also does anyone have shooting advice for kelp/cold water?
Thanks
Robert
The others handled it pretty well. I can dive cenotes (about 74-76 degrees) in a 3mil, no problems. Can dive two weeks in the same range of temps (about 74-79 degrees) in a 3 Mil (2-4 dives a day) for a couple of weeks, no issues (Though I make sure now to to add a vest and/or hood, sooner rather than later, once you start chilling it is not good.)
Did some dives in those numbers (45-55 degree range on wrecks in a dry suit), it gets cold. Stay warm. Hypothermia is not something you want to deal with. I know guys who have had it, in dry suits, in 40 minutes dives in warmer water, 60s, but it is a partial function of work). Also play with the gloves (and think about proper weights) a bit beforehand. 
Generally it is a bit easier to slightly cool down than warm up (though you got to keep hyperthermia in mind also in some cases --> diving wrecks in July, air mid-90s and geared up ready to go as you wait your turn to go into the water, urgh
)