Scientists investigate if reef squid speak to each other with a language they paint on their skin.
"Tentacles" follows Dr. Jennifer Mather as she leads a team of renowned scientists to the beautiful Caribbean island of Bonaire. Their mission is to prove a controversial theory: reef squid speak to each other with a complex language they paint on their skin. The episode also features the bizarre courtship and never-before-filmed egg-laying rituals of reef squid. The world's largest Octopus is encountered in the Pacific Northwest.