Went without a wetsuit - the water was cold but once we got moving it was OK... there was a harbor seal hanging out in the cove but he never came close to us. Ventura Cove is shallower than what I'm used to and we had to swim over a wall of grass to get out to deeper water - it was all good though. After we got out, I started really feeling chilled and couldn't stop shivering for a good hour afterwards. Note to self: wear a wetsuit at Ventura Cove!