Authorities in Puerto Rico are monitoring two dense-beaked whales that got free and are swimming off the US territory’s northwest coast after becoming stranded along with one which died.
Natural Resources Secretary Carmen Guerrero said it is rare to see Blainville's beaked whales strand themselves on the island.
The third whale was a 2.4m calf which stranded itself in Aguadilla on Friday.
Mr Guerrero said biologists transported it to a nearby zoo, but there was no way to artificially feed that type of calf and the US National Oceanic and Atmospheric Administration ordered it to be put down.