Nearly 900 dolphins washed up along Peru’s northern coast between February and April. A government study said the marine mammals died of natural causes, while environmental groups insist the massive toll was linked to offshore oil exploration in the area.

Peruvian officials have suggested that the dolphins, along with 5,000 dead sea birds — mostly pelicans — died due to the effects of rising temperatures in Pacific waters, including the southern migration of fish eaten by the birds.

If all else fails, blame global warming

Could they have swung by Japan instead, humm, makes one wonder.