A U.S.-led research group is claiming to have bolstered the argument that global warming is real, and humans are largely to blame.
Scientists say this is the most comprehensive study to date on global ocean warming.
The research has been published in the journal Nature Climate Change.
The team looked at rising ocean temperatures over the past 50 years, and a dozen models projecting climate change patterns.
Australian based co-author, Dr. John Church from Australia's island state of Tasmania says there's no way all of the world's oceans could've warmed by one tenth of a degree Celsius without human impact.
He says nature only accounts for 10 percent of the increase.