47 meters long tubular jellyfish were photographed in the deep sea of Australia! How does it move in the water? What do you feed on?

Jellyfish is a very beautiful aquatic animal, but also an important plankton in the aquatic environment, there are many species. Recently, Australia photographed a 47-meter-long tubular jellyfish in the deep sea! So how does it move in the water? What do you feed on?

First, 47 meters long tubular jellyfish were photographed in the deep sea of Australia!

The Schmidt Institute of Oceanography has shared a rare video on foreign social media about the Apolemia jellyfish, a tube jellyfish that looks like a long rope floating in the sea and is said to have been filmed in the Ningalo Canyon on Australia's west coast. Scientists used a laser to determine the size of the outer ring and estimated it to be 154 feet (about 47 meters) long based on its diameter.

Second, how do jellyfish move in the water?

1 Mobility

By shrinking the shell and squeezing the inner cavity, the jellyfish changes the volume of the inner cavity, ejects the water in the cavity, and moves by means of water-jet propulsion. The muscle fibers in the jellyfish epidermis extending from the top to the end of the umbrella control the contraction and expansion of the inner cavity. The inner cavity expands and the water is slowly inhaled and fills the inner cavity; the inner cavity shrinks rapidly, pushing the water out of the cavity and causing the jellyfish to move along the axial direction of the body.

two。 Sinking

When the jellyfish tries to sink in the water, the tentacles stretch out and upward, showing a long line; when attempting to rise or move in a certain direction, the distal end of the tentacles bends against the direction of movement. With the help of tentacles, jellyfish can effectively change the direction of movement. Jellyfish are not good at swimming. They often move with the help of wind, waves and currents.

What do jellyfish feed on?

Jellyfish are carnivorous, feeding on plankton, small crustaceans, hirsutes and even small fish. Due to the mechanical and chemical stimulation of food, polyps stretch their tentacles and release thorn sacs to wind, paralyze and poison the catch, and then put the food into the mouth.

What if I get stung by a jellyfish?

Every ocean in the world has jellyfish, and they even appear in some freshwater lakes and ponds. Many neurosurgeons say commonly used painkillers, such as vinegar, urine or softeners, do not help tingling. On the contrary, the best way is to rinse with salt water. Salt water can inactivate tingling cells, while fresh or tap water can reactivate them.

Although the jellyfish is good-looking, it is poisonous. When it is stabbed by the jellyfish, it will only feel burning pain and redness. As long as it is smeared with anti-inflammatory drugs or edible vinegar, it will reduce the swelling and pain in a few days. However, if the situation is serious, it is recommended to go to the hospital immediately.