Jonathan Bird's Blue World - Season 4 Season 5 Episode 10 Sharks Electrosensory Systems + Helmet Diving + Oil Rigs

Jonathan joins shark researcher Dr. Stephen Kajiura to test how well wild sharks can detect electrical fields in their environment. Then, he heads to New Jersey (USA) to learn how to dive in the Mark V commercial diving helmet! Finally, he ends up in the Gulf of Mexico to learn how oil platforms can actually become a healthy artificial reef and attract marine life from miles around.