"By changing colour to imitate local damselfish communities, dottybacks are able to overcome the predator avoidance behaviour in the juvenile fish they hunt," said Dr William Feeney, co-author of the study from the University of Cambridge's Department of Zoology.

"The dottyback behaviour is comparable to the 'wolf in sheep's clothing' scenario from Aesop's Fables, where distinguishing the predator from the harmless 'flock' becomes increasingly difficult when they look alike - allowing the dottyback to creep up on unsuspecting juvenile damselfish," Feeney said.

Operators claim new federal regulations meant to protect marine mammals could put them out of business. Wally Daudrich, president of the Beluga Whale Tourism Association and owner of the Lazy Bear Lodge in Churchill, Manitoba, claims rules prohibit boats from approaching belugas any closer than 50 metres.

According to a coroner probing the death of an Edinburgh pilot, frequent fliers and aircrews are risking their health by breathing in toxic fumes inside aircraft cabins. Stanhope Payne, senior coroner for Dorset, said people regularly exposed to fumes circulating in planes faced "consequential damage to their health".

The British government has created the world's largest marine reserve around the Pitcairn Islands, one of the world's most remote locations. Offering unprecedented protection to more than 1,200 species of marine mammals, fish and sea birds in the South Pacific, the 322,138-square-mile reserve is located is approximately three-and-half times the size of the United Kingdom.