01Orca Whales - False Whales
An orca is a marine mammal, they are actually dolphins. In fact, they are the largest member of the dolphin family! Dolphins and whales are closely related – both are in the order Cetacea, which includes whales, dolphins, and porpoises.
Orcas were given the name "killer whale" by ancient sailors' observations of groups of orcas hunting and preying on larger whale species.
They called orcasasesina ballenas, or "whale killer" – a term that was eventually flipped around to the easier "killer whale".