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Baleen whales have two blowholes positioned in a V-shape, while toothed whales have only one blowhole. [6] The blowhole of a sperm whale , a toothed whale, is located left of centre in the frontal area of the snout, and is actually its left nostril, while the right nostril lacks an opening to the surface and its nasal passage is otherwise well ...
The bisected head of a dolphin: The melon is just above the upper jaw. Three-dimensional models of various odontocete melons based on CT scans. The melon is a mass of adipose tissue found in the foreheads of all toothed whales. [1] [2] It focuses and modulates the animal's vocalizations and acts as a sound lens.
[33] [40] Antarctic orcas may have pale grey to nearly white backs. [38] Some Antarctic orcas are brown and yellow due to diatoms in the water. [22] Both albino and melanistic orcas have been documented. [33] Sexual dimorphism between male (top) and female (bottom) killer whales. Pectoral fins, dorsal fin, and flukes are larger in adult males
The whales rely on fish — preferably Chinook salmon — and live in three pods called J, K and L. The southern residents have been in the spotlight of conservation efforts for decades.
Northern resident orcas, also known as northern resident killer whales (NRKW), are one of four separate, non-interbreeding communities of the exclusively fish-eating ecotype of orca in the northeast portion of the North Pacific Ocean.
The researchers’ analysis revealed exactly how the killer whales, often hunting as a group, subdue the whale shark. First, the orcas use their bodies to hit a whale shark at high speed.
It has also been observed in larger cetaceans such as false killer whales and orca, [20] [21] although most larger Odontocetes do not seek out any form of interaction with boats. Bow-riding is the most common form of interactive behaviour with boats across a variety of smaller Odontocete species, such as dolphins in the genera Stenella and ...
Orcas hunt in groups, and are capable of launching coordinated attacks on blue whales where they will bite their body parts and ram them mercilessly. Once the attack is successful, killer whales ...