Mammal species profile

Orca

Orcinus orca

Order
Artiodactyla
Family
Delphinidae

A closer look

Illustrated identification

Orca (Orcinus orca).  Illustration © Birding Puerto Madryn. View larger

About the species

The orca is the largest dolphin, with a strong black-and-white pattern and a pale patch behind each eye. An adult male’s tall, upright dorsal fin differs from the shorter, curved fin of a female. The broad flippers and powerful body are especially evident when an animal turns near the surface.

Some Valdés orcas specialise in taking sea-lion or elephant-seal pups close to the shore, and a few use intentional stranding. This demanding hunting behaviour is learned within family groups. It is an exceptional event to witness, and an orca travelling past the coast may show none of it.

In our region. Orcas can appear outside the best-known seasons. Punta Norte hunting activity is mainly February–May, while spring opportunities around Valdés are associated with October–November. Tide, wind and the animals’ movements matter; neither sightings nor intentional stranding can be promised.

Habitat

Coastal and offshore waters; locally, shores near pinniped colonies.

Foraging

Marine prey varying among groups; local coastal specialists take sea lions and elephant seals.

Source

Administración Península Valdés — Orcas

Punta Norte Orca Research — FAQs

Society for Marine Mammalogy — Species and subspecies list

Illustrations and design © Birding Puerto Madryn / Tinamou Travel. All rights reserved.