LIFESTYLE

Puerto Rico monitoring stranded whales trip back to the depths of the Atlantic

BOCA RATON, FL - JANUARY 10:  Tim Fry from the Boca Raton Ocean Rescue Team helps in the attempt to pull a dead sperm whale that appeared to have been dead for a while ashore on January 10, 2014 in Boca Raton, Florida. The whale was found this morning and officials with the Florida Fish and Wildlife Conservation Commission and the National Oceanic and Atmospheric Administration were on scene to conduct tests to try to determine the cause of death.  (Photo by Joe Raedle/Getty Images)

BOCA RATON, FL - JANUARY 10: Tim Fry from the Boca Raton Ocean Rescue Team helps in the attempt to pull a dead sperm whale that appeared to have been dead for a while ashore on January 10, 2014 in Boca Raton, Florida. The whale was found this morning and officials with the Florida Fish and Wildlife Conservation Commission and the National Oceanic and Atmospheric Administration were on scene to conduct tests to try to determine the cause of death. (Photo by Joe Raedle/Getty Images)  (2014 Getty Images)

Authorities in Puerto Rico are monitoring two dense-beaked whales that got free and are swimming off the U.S. territory's northwest coast after they became stranded on the island along with one that died.

Natural Resources Secretary Carmen Guerrero says it is rare to see Blainville's beaked whales strand themselves on the island.

The third whale was an 8-foot (2.4-meter) calf that stranded itself Friday in Aguadilla. Guerrero says biologists transported it to a nearby zoo, but there was no way to artificially feed that type of calf and the U.S. National Oceanic and Atmospheric Administration ordered it euthanized.

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