If I say that there is a crab in the world that will "cheer up" people like cheerleaders, we may think it is unlikely and unimaginable, but in fact, there is such a crab in the Indian Ocean and Hawaii, the name is called cheerleader crab, let's know it below.
Cheerleaders crabs, also known as boxing crabs, refueling crabs, mainly distributed in Southeast Asia to Australia and other regions, inhabit the shallow waters near the hard coral reefs, the reason why it is called cheerleaders crabs such an interesting name, mainly because its two pliers often catch these two anemones, and will from time to time in the "hand" of the two anemones, its movement is very similar to the cheerleaders in the refueling when the appearance, so it got its name.
The cheerleaders crab is small in size, generally the adult crabs are between 1.3 and 3 cm long (such as the cheerleaders crab distributed in Hawaii, the adult crabs are only 1.3 cm long; the adult crabs distributed in the Indian Ocean are only 2.5 cm long), living in shallow waters near coral reefs with high alkaline (pH value 8.0 to 8.3), and the suitable living temperature is between 22 and 25 °C.
Cheerleaders crabs do not have any outstanding characteristics in terms of body shape, its more special is its "hand" of the two small anemones, this is its winning magic weapon, when the cheerleaders crab encounters danger, it will hide in the coral reef or stone crevices, and then like a cheerleaders waving the "hand" anemone, to drive away predators, because the anemone is poisonous, and the cheerleaders crab because of its shell, not afraid of its poison, it will wave in front of the anemone's poisonous tentacles to scare off predators;
Seeing this, you will definitely think that the anemone is very innocent, and the heart must be very broken: "I am so difficult, I recruit who to provoke whom, you have to do this to me", but in fact, the anemone and the cheerleaders crab are a pair of good friends, there is a symbiotic relationship between them, the cheerleaders crabs can use the poisonous tentacles of the anemones to turn the crisis into safety, and the anemones themselves move very slowly, it can expand its range of activity through the cheerleaders crabs to obtain more food, and in the process of waving the cheerleaders crabs, it can also increase the filter feeding microorganisms in the seawater So the mutually beneficial symbiotic relationship between them can be said to be a very clever and effective survival strategy.