World free-diving champion Tanya Streeter spends two weeks diving with humpback whales in the Turks and Caicos Islands as they migrate southward. Watch this truly amazing video as she achieves her phenomenal goal to swim freely with a mother humpback whale and her 4 week old calf. Taken from BBC show 'Diving with Whales'."
Joe's comment: Free-diving is diving with what air a person may carry in their lungs; no compressed air tanks allowed. Drawing upon the so called "mammalian dive reflex" with which our ancestry seems to have equipped us, human free-divers are reported to have, on one breath, stayed underwater for more than 20 minutes..., and come back alive and well..., and gone down well below 300 feet..., and come back up under their own power; just like whales, seals, sea otters, and other diving mammals! (For more information on the "mammalian dive reflex" see < http://ideas.ted.com/science_of_freediving/ >) Also, check out Tanya Streeter's "whale's tail foot flukes" and see how she uses them with her "body ripple" swim stroke - no commotion, no flailing, no bubbles - to glide through the water as comfortably as if she were designed to do so.
Another "body ripple" swimmer using "whale's tail foot flukes," in a pool under bright lights this time. On one breath, 225 meters in one case, 80 meters in another. (Sorry, no whales. :-) ) https://www.youtube.com/watch?v=Km2NXzCmex8