This Associated Press video says about itself:
(7 Nov 1971) Protest demonstrations in Washington, Toronto, and Tokyo against the US American five megaton nuclear bomb test on Amchitka.
By Bethany Brookshire in the USA, 11:30am, November 7, 2018:
50 years ago, atomic testing created otter refugees
When the [Atomic Energy Commission] first cast its eye on the island of Amchitka as a possible site for the testing of underground nuclear explosions, howls of anguish went up; the island is part of the Aleutians National Wildlife Refuge, created to preserve the colonies of nesting birds and some 2,500 sea otters that live there…— Science News, November 9, 1968
Some otters remained around Amchitka, but 602 otters were relocated in 1965–1972 to Oregon, southeast Alaska, Washington and British Columbia — areas where hunting had wiped them out. All but the Oregon population thrived, and today more than 25,000 otters live near the coastal shores where once they were extinct.
This 2015 video says about itself:
The Sea Otter’s Enchanted Forest | America’s National Parks
Endangered sea otters protect the kelp beds by preying on small undersea life, which would otherwise overpopulate.