Stomach-churning green sea kills thousands of fish on Thai beach

Thousands of dead fish wash up on beach as plankton turns sea green

Experts voice concern over Thailand oil spill that may 'sterilise' corals off country's eastern coast

Sea turtle and baby dugong swim together off coast of Thai beach

Japanese divers measure zoo whale shark's girth during health check-up

Bloated Bryde's whale carcass found floating off Thai island coast

Lifeboat team rescue dolphins washed ashore in Scotland

Divers swim alongside rare pod of killer whales in Indonesia

Artist uses discarded oyster shells as canvas for marine animal paintings

Squishy-looking marine animal found crawling on Thai beach

Pregnant pygmy sperm whale rescued after washing ashore along Taiwan beach

Friendly whale shark approaches fisherman and allows himself to be stroked

Friendly pod of melon-headed whales play with tourists

Joy of young seal released back into the sea