In 2015, 337 baleen whales died and washed up on beaches in Patagonia, Chile. It’s the largest mass die-off of baleen whales ever observed. A deadly bloom of algae called a red tide is attributed as the cause. Scientists set up time-lapse cameras to study the effects of the carcasses on the surrounding area, and also to study the different stages of decomposition. They hope the footage will help identify the time and cause of death in future beachings. ➡ Subscribe: bit.ly/NatGeoWILDSubscribe About National Geographic Wild: National Geographic Wild is a place for all things animals and for animal-lovers alike. Take a journey through the animal kingdom with us and discover things you never knew before, or rediscover your favorite animals! Get More National Geographic Wild: Official Site: bit.ly/NatGeoWILD Facebook: bit.ly/NGWFacebook Twitter: bit.ly/NGWTwitter Instagram: bit.ly/NGWInstagram Read more in "Time-lapse shows how 337 dead whales can reshape a landscape" www.nationalgeographic.com/environment/2018/10/baleen-sei-whale-stranding-decomposition-time-lapse-video/ See What Happens After a Mass Whale Stranding | Nat Geo Wild youtu.be/PTJr22h0eIs Nat Geo Wild www.youtube.com/user/NatGeoWild