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The killer whales regularly demonstrate their competence by chasing seals up shelving gravel beaches, up to the edge of the water. The pursuing whales are occasionally partially thrust out of the sea by a combination of their own impetus and retreating water, and have to wait for the next wave to re-float them and carry them back to sea. [12]
In the drone video, they observed that younger, smaller whales often swam sideways or facing forward, opening and closing their mouths to find and take in food. Older, bigger whales, meanwhile ...
Humpback whale breach sequence. A breach or a lunge is a leap out of the water, also known as cresting. The distinction between the two is fairly arbitrary: cetacean researcher Hal Whitehead defines a breach as any leap in which at least 40% of the animal's body clears the water, and a lunge as a leap with less than 40% clearance. [2]
In fast currents, the cirri do not retract. Land-based barnacles have to reorient their cirri depending on the direction of the current; but since the current only flows in one direction for whale barnacles—from the head to the tail of the host—adults have lost that ability. However, the cirri do have a special function during copulation. [20]
Humpback whales are migratory and only eat during half of the year. [5] During this feeding season humpback whales actively feed for up to twenty-two hours a day. [4] They do this so they can store enough fat reserves to live through their breeding season when they do not eat at all. [4]
A seal is lucky to be alive after it was accidentally swallowed by a humpback whale! A group of sightseers got more than they bargained for while on an excursion with Blue Kingdom Whale and ...
The motion of the head may induce a bow wave in the fluid which pushes the prey away from the jaws, but this can be avoided by allowing water to flow through the jaw. This can be accomplished by means of a swept-back mouth, as in balaenid whales, [21] or by allowing water to flow out through the gills, as in sharks and herring.
The whales also got attention for their ruthless hunting techniques. In October, the carcass of a great white shark with its liver ripped out washed ashore near Portland, Australia. Researchers ...