Do jellyfish glow? How do jellyfish hunt?

Jellyfish are important plankton in aquatic environments. Their bodies are mainly composed of water and are made up of two germ layers: the inner and outer layers. Jellyfish are carnivorous and feed on plankton, small crustaceans, polychaetes, and even small fish. The following is about whether jellyfish can glow? How do jellyfish hunt? I hope this is useful to you.

Contents of this article

1. Do jellyfish glow?

2. How do jellyfish hunt?

3. Will jellyfish turn into water when they die?

Do jellyfish glow?

Jellyfish can glow. They mainly rely on a substance called aquimin to glow. When aquimin meets calcium ions, it will emit strong blue light. Calcium is an essential ion for the movement of organisms and is stored in body fluids and cells. So as long as the jellyfish is alive, it will glow.

There is a special gland in the umbrella of jellyfish that can emit carbon monoxide, which can make the umbrella expand.

Jellyfish are important plankton in aquatic environments. Their bodies are mainly composed of water and are composed of two germ layers: the inner and outer germ layers.

Jellyfish usually live singly, floating or swimming. A very small number of species live in groups, and some groups can live a fixed life.

How do jellyfish hunt?

Jellyfish are carnivorous, feeding on plankton, small crustaceans, polychaetes and even small fish. Due to mechanical and chemical stimulation of food, jellyfish extend their tentacles and release nematocysts to entangle, paralyze, and poison captured food, and then send the food into their mouths. The mucus secreted by the glandular cells in the jellyfish's mouth area facilitates the swallowing of food, and the jellyfish kills and digests the food only after swallowing it into the stomach cavity.

When food enters the jellyfish's stomach cavity, the glandular cells in the stomach layer begin to secrete proteases to break down and digest the food into many polypeptides. At the same time, the flagellar movement of the nutritional muscle cells in the stomach cavity can mix and push the food.

The pseudopodia of nutrient muscle cells engulf food particles, forming a large number of food vacuoles inside the cells. After acidic and alkaline chemical processes, the nutrients are transported throughout the body through various channels, and undigested food residues are still discharged from the mouth.

Do jellyfish turn into water when they die?

Yes. Since 95% of the jellyfish's body is water, when the jellyfish dies, the rest of its body will be decomposed by other organisms in the water or dissolved in the water, so the jellyfish will appear to have turned into water after death.

Jellyfish are carnivorous animals that feed mainly on plankton, small crustaceans and small fish.

Jellyfish are important large plankton in the marine environment and are also a type of invertebrate.

There are more than two hundred species of jellyfish in the world's waters, with various shapes and forms. They are commonly found in oceans around the world, and only a few species are found in fresh water.