Bottlenose dolphins in Panama’s Bocas Del Toro Archipelago should be designated as endangered say the authors of a new study. Biologists working at the Smithsonian Tropical Research Institute discovered that the roughly 80 dolphins in the archipelago do not interbreed with other Caribbean bottlenose dolphins. Their low numbers jeopardize their long-term survival, which is threatened by increasing local boat traffic that killed at least seven dolphins in 2012.