: PBS LearningMedia
An underwater episode this time, interacting with dolphins. In the episode we see bottlenosed and spotted dolphins and learn about echolocation (a skill that bats also have) - used to grab food and avoid danger. We also learn about the group and teamwork mentality of dolphins, the dangers posed to dolphins such as tuna fish and pollution, their eagerness to play with divers, and the fact that dolphins are always communicating with each other (blowhole blasting, whistles, fin rubbing, tail slapping on the ocean floor, getting attention by corkscrewing their bodies or swimming upside down during courting for a mate, etc. Other creatures are also noted in the episode such as tiger sharks, remoras and sting rays (who are related to sharks, by the way). Finally, we get even more evolutionary propaganda: millions of years ago cow-like animals started being in the water and eventually adapted to become dolphins and whales. Pretty funny if you ask me. Anyways, the Kratt brothers did a good job on this one. That's all for now.
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