Marine mammals and sonar concern, but very little definitive information was known. In 1995 a comprehensive book on the relation between marine mammals and noise had been published, and it did not even mention strandings. In 2013, research showed beaked whales were highly sensitive to mid-frequency active sonar. Blue whales have also been shown to flee from the source of mid-frequency sonar, while naval use of mid- and high- frequency side-scan sonar was deemed 'the most probable cause' of a mass stranding of around 50 short-beaked common dolphin ("Delphinus delphis") on 9 June 2008 in Falmouth Bay, Cornwall, UK. There was anecdotal evidence from
Jim Henson's Creature Shop which cost more than $100,000. Jim Henson's Creature Shop Jim Henson's Creature Shop is a special/visual effects company founded in 1979 by puppeteer Jim Henson, creator of The Muppets. The company is based out of Hollywood, California, United States, and then Camden Town in London, United Kingdom. Jim Henson's Creature Shop was originally created as a partnership with British illustrator Brian Froud to facilitate the production of "The Dark Crystal". Located in Hampstead, London, it received its name in order to differentiate it from Henson's original puppet workshop in New York City. It was then used for future films such