How to Identify Orca

To identify Orca (Orcinus orca), look at these key features.

Physical Characteristics

Body shape

torpedo

Coloration

Distinctive black dorsal surface and white ventral surface, with a white patch behind the eye and a white saddle patch behind the dorsal fin. The size and shape of these patches vary among individuals and ecotypes.

Scale type

none

Mouth position

terminal

Distinctive features

Large, robust body, Prominent, erect dorsal fin (up to 1.8 m in males), Rounded head with no beak, Large, paddle-shaped pectoral fins, Distinctive black and white countershading

Dorsal fin

Tall, triangular, and erect in males (up to 1.8 meters); shorter and more falcate (curved) in females and juveniles.

Tail fin

Broad, horizontal flukes with a median notch, typically black on the dorsal side and white on the ventral side.

Pectoral fin

Large, oval, and paddle-shaped.

Distinctive fins

The size and shape of the dorsal fin are key identifiers for sex and individual recognition. The saddle patch behind the dorsal fin is unique to each individual.

Identification Tips

1. 1

   Coloration

   The stark black and white pattern is unmistakable. Look for the white eye patch and saddle patch.

2. 2

   Dorsal Fin

   Males have a very tall, straight dorsal fin (up to 6 feet). Females and juveniles have a shorter, more curved fin. This is a primary distinguishing feature from other large dolphins.

3. 3

   Body Shape

   Robust, powerful body, larger than any other dolphin species.

4. 4

   Behavior

   Often seen in pods, exhibiting coordinated hunting, breaching, and spyhopping behaviors.

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