Pseudorque

Pseudorque at Nosy Be

As its name does not indicate, the pseudorque (also called false killer whale or false killer whale) belongs to the family of dolphins. Halfway between dolphin and orca, its rounded head and imposing size, however, remind of the famous "killer whale".

Present in a large part of the seas of the globe, it moves in groups of a few individuals or hundreds, sometimes scattering over several kilometers, and frequently swims in the bow of boats. As a player, he can jump and raise his head and much of his body out of the water.

When can we see pseudorques at Nosy Be?
Pseudorques stay year round around Nosy Be, in the deep waters behind the ocean shelf. It is therefore possible to see them on each outing offshore when we are looking for whales and during our trips to Nosy Iranja.
What do they eat?

Pseudorques feed on various types of fish and large cephalopods. However, it is known for its aggressiveness and can also attack large mammals such as dolphins, sharks or birds. The pseudorque is known to be a thief, stealing fish trapped in fishing lines and nets. Some attack dolphins to take their tuna.

Daily a pseudorque eats an amount of food equal to 5% of their body mass.

How much do they measure?

Pseudorques are massive dolphins, which can reach up to 6 meters and weigh more than 1 ton as an adult!

Despite this, it is a dynamic animal which, thanks to the large lumbar vertebrae, can swim quickly and clothing.

Are there pseudorques in captivity?

The pseudorque is known to be an animal not only intelligent but above all easily tame and adaptable. There are therefore unfortunately pseudorques in captivity in certain dolphinariums.

In a dolphinarium in Japan, a pseudorque male even mated with a female bottlenose dolphin, which gave birth to a hybrid animal called a balphin.

What threats does it face?

In Japan, they are still hunted for their flesh.

Due to its position in the animal chain, it is bio-accumulating many pollutants, including mercury already highly concentrated by tuna and skipjack (in the form of methylmercury in particular, a compound even more toxic than pure metallic mercury).

In addition, they are prey to certain predators: In 2009, a pseudorque was found stranded as a result of the bites of a great white shark and many pseudorques have bite scars attributed to sharks. Off New Zealand in 2010, a group of tourists witnessed an attack by a group of orcas on a group of pseudorques.

To discover on excursions

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