Evolution of the Super Sail
http://www.mindbites.com/lesson/10490 for full video. Australian scientist Mark Gordon goes in search of the missing link between the squid and the octopus. In this program we peer into the private lives of cephalopods: squids, octopuses, cuttlefish and the mysterious chambered nautilus. Some octopuses have arms two meters long; the smallest squid has a whole body no longer than 20 millimeters. These highly evolved shellfish display an incredible variety of behavior using color-change, highly maneuverable arms, a water jet-propulsion system and a large brain. Mark achieves his goal among some very unusual squids living at the bottom of the ocean."