Last Updated: Thursday, November 29, 2012, 10:10
World`s largest predators - the blue whales - execute acrobatic 360-degree rolls while feeding on their small crustacean krill prey.
Last Updated: Saturday, October 10, 2009, 19:47
Scientists have discovered how ``superswarms`` of krill assemble together to form some of the largest gatherings of life on the plant.
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