The nearly extinct and endangered North Atlantic Right Whale is not holding its collective breath, hoping Spock will again time travel to our century to capture and transport two Right Whales (instead of the humpbacks George and Gracie) to the 23
rd century to repopulate the species and save the Earth from an alien probe causing destructive climate change on Earth, because there are no whale songs.
Star Trek IV: The Voyage Home (1986).