The lotus-like body part on the back of the Nudibranch is actually not its tail but its mouth and ass.

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The gender of most fishes in the sea can be changed, such as clownfish. When the polyandry children lose their mother, the sons may become females to breed the next generation again with their father.

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Sharks don’t have any interest in human blood and it can even be said that they feel disgusted about it, while the reason why surfers are bitten is that they often stretch their limbs out of the surfboard when entering the sea so that the shark mistakenly thinks that they are “delicious food” like turtles or seals, but when it tries to bite it, it often feels disappointed and then leaves because it is human blood, which is why the few people in the world who are attacked by sharks each year are all “bitten” rather than “eaten off”.

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