Watch: Snorkelers swim with pseudorcas off Costa Rica’s Osa Peninsula

As one of the most bioproductive pelagic marine habitats on Earth, the deep ocean off Costa Rica’s southwestern Osa Peninsula is known for its spectacular whale and dolphin watching. During a dolphin tour 32 kilometers (20 miles) from Osa, tourists encountered a pod of about 60 pseudorcas (Pseudorca crassidens), also known as false killer whales. After following the pod for over an hour, the group stopped for a break, and this mother and baby stopped with them.

Pseudorcas are the third-largest members of the dolphin family and are closely related to orcas.