Changing SeasSeason 72015 · 4 episodesEpisodes1Sea Turtles: The Lost YearsAfter sea turtle hatchlings emerge from their nests, they vanish into the sea. Until recently, their journey was largely shrouded in mystery. Now, as technology advances, researchers are beginning to understand where turtles go during their so-called “lost years.”2Grand Cayman's Famous StingraysEach year, thousands of tourists interact with the tame southern stingrays that congregate in the shallow waters of Grand Cayman’s North Sound. Famous marine artist and scientist Dr. Guy Harvey has assembled a research team to study what impact the ecotourism might have on the wild fish.3Billfish: Battle on the Line?The unique oceanographic conditions of the eastern tropical Pacific make the area one of the best spots in the world for big game anglers to hook billfish. But intense pressures from commercial fishing operations have taken their toll on the numbers of sailfish and marlin in the region. Researchers are studying the animals to provide the data necessary to protect the fish populations from further decline.4The Secret Sex Life of FishMost people are familiar with the pretty tropical fish found in aquariums, but few realize that some of these animals are capable of changing sex. Discover the unique ways of how some fish species do this and why they likely evolved this way.Season 1Season 2Season 3Season 4Season 5Season 6Season 8Season 9Season 10Season 11Season 12Season 13Season 14Season 15Season 16Season 17Season 18
