Tricks to recognize a Heaviside’s dolphin
CHARACTERISTICS OF A HEAVISIDE’S DOLPHIN
A small animal, reaching a maximum body length of only 1.75m. There is little obvious difference in size between the sexes.
Heaviside’s dolphin can be readily distinguished by its low, almost triangular dorsal fin.
The coloration of Heaviside’s dolphin is unmistakable: largely grey with blackish cape, white trident-shaped ventral patch with finger-shaped marks on both sides of lower rear body.
Triangular and pointed, dark.
The dorsal fin has an overall triangular shape, but the leading edge tend to be slightly convex and longer than the trailing edge, which may be slightly concave.
Cone shaped head with indistinct beak
Typical group size up to 10
Shy and rarely active or boisterous, though sometimes porpoises at high speed.
Aerial activity and social interactions are more prevalent in the larger groups. While inshore in the early morning, these dolphins seem to favour areas with high surf activity, where they may spend time riding the waves inshore and leaping out of the back as they break.
Present year round