You may have spent time at the beach this summer, watching the waves and swimming in the surf, but on this week’s Please Explain, we're going below the surface to look at some of the creatures that live on the ocean floor—cuttlefish, squid, and octopus. Roger Hanlon senior scientist at the Marine Biological Laboratory in Woods Hole, Massachusetts, and Ellen Prager, formerly the chief scientist at Aquarius Reef Base in Florida and author of Sex, Drugs, and Sea Slime join us to talk about these creatures and their amazing abilities to camouflage themselves.

Watch this amazing video of an octopus shot by Roger Hanlon: