How to Identify Bottlenose Dolphin

To identify Bottlenose Dolphin (Tursiops), look at these key features.

Physical Characteristics

Body shape

torpedo

Coloration

Generally dark grey on the back, fading to lighter grey on the sides, and white or pinkish-white on the belly. Some individuals may have faint spotting or scars. The demarcation between dorsal and ventral coloration is often distinct.

Scale type

none

Mouth position

terminal

Distinctive features

Robust body build, Short, distinct snout (bottlenose), Prominent, falcate (sickle-shaped) dorsal fin located midway along the back, Flukes (tail fins) are broad and notched in the center, Pectoral fins are moderately long and paddle-shaped

Dorsal fin

Single, prominent, falcate (sickle-shaped) dorsal fin, typically dark grey.

Tail fin

Broad, horizontal flukes with a distinct median notch, dark grey.

Pectoral fin

Two moderately long, paddle-shaped pectoral fins, dark grey.

Distinctive fins

The shape and position of the dorsal fin can sometimes be used for individual identification due to nicks and scars.

Identification Tips

1. 1

   Snout

   The short, distinct 'bottlenose' is a key identifier, differentiating it from species with longer, more slender beaks or no distinct beak.

2. 2

   Dorsal Fin

   Its prominent, falcate dorsal fin is characteristic. Scars and nicks on the dorsal fin are often used for photo-identification of individuals.

3. 3

   Size and Build

   Adults typically range from 2 to 4 meters (6.6 to 13.1 feet) in length and weigh between 150 to 650 kg (330 to 1,430 lbs). Their robust build helps distinguish them from more slender dolphin species.

4. 4

   Coloration

   The classic dark grey back, lighter sides, and white belly is a common pattern, though variations exist.

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