Ocean Giants episode 3 - Voices of the Sea: Whales and dolphins are nature's supreme vocalists, with a repertoire to put an opera singer to shame. The mighty sperm whale produces deafening clicks in its blowhole which it uses to locate giant squid two miles down in the ocean abyss, while migrating narwhals use similar sounds to pinpoint vital breathing holes in Arctic ice floes.
Last Nature posts on HDclump.com and ClumpHD.com:
https://hdclump.com/greta-thunberg-a-year-to-change-the-world-episode-1/
https://hdclump.com/greta-thunberg-a-year-to-change-the-world-episode-2/
https://hdclump.com/greta-thunberg-a-year-to-change-the-world-episode-3/
https://hdclump.com/shark-episode-1/
https://hdclump.com/shark-episode-2/
https://hdclump.com/shark-episode-3/