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347 views • May 25, 2021

Cetaceans, the Giants of the Open Ocean

Natural World Facts
The wonderful world of whales and dolphins. Below the waves lies a world of giants. Out in the open ocean, whales and dolphins are well-suited for to a life of wandering, traversing thousands of miles each year in search of krill blooms or breeding grounds. Together, these colossal mammals belong to the infraorder cetaceans. A name with roots in Greek, from ketos, meaning ‘a large sea creature’. But despite their size, cetaceans are elusive creatures, spending most of their lives underwater and in remote areas far out to sea. Let’s shine a light on the wonderful world of these marine mammals. 00:00 - An Introduction to Cetaceans 01:11 - The Diversity of Cetaceans 01:50 - The Structure of Whales and Dolphins 02:47 - The Two Cetacean Superfamilies 03:01 - Mysticeti: How Baleen Whales Hunt 03:34 - The Colossal Blue Whale 03:58 - Rorqual Whales Explained 04:20 - Seasonal Whale Migrations 04:55 - Odontoceti: The Toothed Whales 05:14 - The Acrobatic Spinner Dolphin 05:42 - Hunting: Strand Feeding in Dolphins 06:12 - Hunting: Mud Ring Feeding in Dolphins 06:36 - Hunting: Bubble-net Feeding in Humpbacks 07:53 - Deep Dive: The Cuvier's Beaked Whale 08:24 - Deep Dive: The Sperm Whale 08:42 - The Mammalian Diving Reflex 09:10 - Vocalisations in Cetaceans 09:29 - The Song of the Blue Whale 09:44 - The Song of the Fin Whale 09:56 - The Song of the Humpback 10:23 - The Song of Toothed Whales 10:59 - The Mighty Killer Whale 11:33 - Whale-Fall Communities 12:24 - The 'Whale Pump' 12:57 - Conclusion DEEP SEA HUB: https://naturalworldfacts.com/deep-sea-hub/ Footage used is from YouTube, MBARI, OceanX, NatGeo, the Ocean Exploration Institute and the Schmidt Ocean Institute, as well as other sources. Music Used: Precious Life by Savfk On the Origin of Species by Savfk Big Day Tomorrow by Savfk Through The Crystal by Jeremy Blake Space Walker by Au.Ra Footsteps Underwater by JAde Wii #deepsea #wildlife #nature #documentary #ocean #marinebiology #science #biology Bibliography: Dipper, F. (2016). The Marine World: A Natural History of Ocean Life. United Kingdom: Princeton University Press.
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