Pygmy Killer Whales (Feresa attenuata) or False Killer Whales (Pseudorca crassidens)? Identification of a Group of Small Cetaceans Seen off Ecuador in 2003
Pygmy killer whales (Feresa attenuata) are a very poorly known species (Donahue & Perryman, 2009; McSweeney et al., 2009), and