How do sponges eat and what do sponges eat?

1.The predation method of sponges is a filter feeding method, and each small hole in the body wall of the monomeric sponge is a "mouth". Sponges pass through the flagella that constantly vibrate the body wall.

The seawater containing the bait is constantly seeping into the cavity through these small holes. There are numerous collar flagellation cells in the inner wall, which fluctuate in a spiral from the base to the apex, creating a gravitational pull in the same direction.

2.When the sponge lives, one end is fixed and the other end is free, and usually there is a large hole at the free end, called the "water outlet hole". The water flows from the pores of the flat cells into the cavernous body and out of the outlets, making it look like a pump and lifeless.

But the amount of water that passes through its body every day is quite staggering, and the large sponge can reach tons of water, but the sponge can only take a pitiful amount of food from it.

3.Sponges are the most primitive multicellular animals, which have lived in the ocean 600 million years ago and have developed to more than 10,000 species, accounting for marine animals.

Species of 1 to 15, is a huge "family". Except for about 20 species of needle sponge, which are freshwater, they are all distributed in the intertidal zone of the ocean.

To a depth of 8,500 meters (more than 28,000 feet), the camp lives in a fixed position.

Are sponges really animals? The use of ocean currents to filter seawater for feeding has been protected by most countries.

Sponges are the most primitive and lowest-grade multicellular animals on Earth, originating in the Cambrian period more than 500 million years ago.

Although sponges are animals, they cannot walk on their own, but can only attach themselves to the reefs on the bottom of the sea and obtain food from the seawater that flows around them. Most sponges live on the substrate of hard rock.

Although they cannot move, they can already filter feed. The small holes that cover the whole body are filled with flagella and a silver sieve-like ring, which can be collected into the seawater with the swing of the whip, bringing in oxygen, bacteria, and microscopic algae.

and other organic detritus, which are then filtered through the ring, and finally become the nourishment for the Poseidon feast to sustain survival. Sponges are immobile, but they survive and continue to reproduce after many changes and disasters on Earth, and sponges are able to filter themselves in the water on a regular basis and draw nutrients from dead organisms.

Sponges provide protection and metabolic waste to the algae, which in turn supply the sponge with oxygen, which can also be used as food for the sponge after the algae die.

The sponge swells when exposed to water because it absorbs water;

Sponge, is a porous material that has good water absorption and can be used to clean items. Commonly used sponges are made of wood cellulose fibers or foamed plastic polymers. In addition, there are natural sponges made from sponge animals, and most natural sponges are used for body cleaning or painting.

In addition, there are three types of synthetic sponges made of other materials: low-density polyether (non-absorbent sponge), polyvinyl alcohol (superabsorbent material with no visible porosity) and polyester.