Page 25 - Whales and Dolphins
P. 25
Dark grey to blue-black with broad base and “hump”:
colouration on upper can be highly variable shape
side
Knobs on top of head and
lower jaw
usually serrated on the trail-
ing edges. Dark on top and
can vary from black to white
underneath
Rounded protrusion at tip of Underside can be black,
lower jaw white or mottled, but usual-
knobs on leading edges. White underneath, ly at least partially white Although females are on average larger
but can be black, white or mottled on top than males, the only way to distinguish
the sexes is by the presence of a grape-
varying by population or individual fruit-sized lobe at the rear of the genital
slit or presence of a calf (female) or the
*Note: 'Illustrations reproduced with permission from the International Whaling Commission” detection of singing (male).
© R.Baldwin/ESO, 2012
© H.Al Farsi, 2021
22
