Open ocean swim in transit to San Benedicto Island (Socorro)

Location: Halfway between Cabo San Lucas and San Benedicto Island, Revillagigedos
Comments: Captain Dave reports that their southbound transit back down to San Benedicto Island (Socorro) was delightfully smooth with a very gentle roll in following seas of 3 to 4 feet.  Because it was such a hot and calm day, Dave decided to take way off the ship and open the pool up for open ocean snorkelling and swimming.   Given that they were in 10,000 feet of water, it was fairly sure that nobody would see the bottom!  However guests did see lots of different kinds of jellyfish as well as some pelagic tunicates.  We figure that open ocean splashes are always a good bet time permitting as you never know what you might see.  On the last trip, our guests actually saw a giant manta ray swim past in open ocean!
Weather: High thin overcast, light winds from the north, low swell of 3 to 4 feet, air temperature 79°F
Water: Water temperature 75°F, visibility 75 feet