Before recent storms roiled the Pacific Ocean, conditions were calm and people were able to observe California Sea Lions rafting up and down the Mendonoma Coast. Sea Lions join together in a raft for protection as they sleep. Alan Reinke photographed a large raft recently.
They extend a flipper out of the water to warm it. The warmth is then sent to their internal organs, helping to regulate their body temperature. In hot weather they will do this to cool themselves down.
Thanks to Alan for allowing me to share his photo with you here! If you'd like to see a close-up photo of a Sea Lion with her pup, here is the link: http://www.mendonomasightings.com/2011/06/05/california-sea-lions-photographed-on-the-rocks-off-the-mendonoma-coast/