In Japan, two wonderful and rare killer whales were suddenly noticed.
According to an employee of the travel company, a few years ago, one of the killers was spotted off the coast of Japan, and now a young one has joined him.
In the case of mutation, animals have a partial loss of pigmentation.
Leucism is sometimes confused with albinism, but unlike albinism, leucism lacks pigment cells altogether.
While albinism only affects melanin, leucism results in a decrease in all types of pigments.
Zoologists said that there are five white killer whales in the world.
Scientists speculate it could be due to declining numbers, a sign that the species is in trouble.
This results in rare genetic disorders that prevent animals from surviving in the wild.
The leucism may interfere with their hunting abilities.