So, I went to my first MeetUp tonight to do sea kayaking. They provided the kayaks so I thought why not give it a shot!?
Granted I didn't know what I was doing, but there is no real workout to be had doing it. I think it's more of an endurance sport - like if you paddle for 9 hours against the wind and current you might burn 150 calories.
It was nice to be on the water though and I met some interesting people. But, I think for a water workout I'll stick to rowing.