What is a capuchin jellyfish?

Portuguese jellyfish is a strange animal. Their ancestors were an ancient primitive animal that lived in groups in a sitting position. Many of them wander around in the immature stage, looking for future life partners. They unite with each other to form a huge group, but they look like an independent and complex monomer. This kind of group combination is often mistaken for a strange animal, and it is simply impossible to see that it is actually a big family that lives in harmony and together.

Jellyfish belong to coelenterates, and there are two different forms at different stages of evolution: lifestyle-dependent hydra and free-floating jellyfish. Jellyfish colony also consists of two forms: hydra and jellyfish. The core of the group is a hollow column, which communicates with the digestive cavity inside all members of the group. Because of this coelenterate system, the food left here is evenly distributed to the whole population. At the top of the hollow column is an individual jellyfish, and its bell-shaped hat becomes a gas tank filled with gas. The group is called an airbag with a cross section of 30 cm. This big bubble is blue or purple, and the upper part of the pale rainbow back is almost completely out of the water. For Portuguese curly-tailed jellyfish, it plays the role of floating room and sail.

The wall of the airbag has a considerable density, so it is strong and can withstand considerable internal pressure. Below the inner wall is a swimming clock composed of many members of jellyfish colony-"swimming clock", which contracts rhythmically to squeeze out water and make the colony move towards the target.

The most important member of the group is the nutritional hydra, which is a kind of hydra sitting on the "belly" of the group, and they are very similar to inverted small cans. Hydra performs the duties of hunter and chef, and feeds the group. In order to catch their prey, these hunters are equipped with small lassos-dendritic tentacles with prickly cells. Antennas are responsible for catching and killing prey and putting it in people's mouths, while Hydera puts on a "pointed hat" and starts cooking for the group.

Members of a group are related to each other through the same nerve fibers. Therefore, the injury of a member will cause the defensive reaction of the whole group: shrinking the tentacles, shrinking the hydra's body and airbag. With the contraction of the breathing tube, the proportion of the population increases, so the whole organism sinks or moves in other directions. The swim bladder of the jellyfish is asymmetric and can be divided into two categories: the so-called "right wing" and the "left wing". Because the back is "S"-shaped, it is more asymmetric. When the Portuguese capuchin jellyfish swims in the wind, the sail is acute, with the "right wing" to the left and the "left wing" to the right. The jellyfish brought to the shore by the wind rotates along its vertical axis and swims in the opposite direction against the wind. At this time, the breathing tube often becomes a ball. Their fleet consists of a part of the "left wing" or "right wing" of the Portuguese capuchin jellyfish. The two wings can't swim together because the wind scar blows in different directions. The formation movement in a cluster is very similar to the exercise of a sailing fleet.