Some sea sponges are asexual and produce gemmules and bud, break off, and settle elsewhere to form a clone of their parent.Īnother interesting fact is that if you were to break a sea sponge into two, underwater, its cells would reconstruct themselves and bring it back together. ![]() ![]() These have cilia or tiny hair in order to propel themselves and finally find a good place on the sea floor, conducive for their growth. If they are then absorbed by another sea sponge by way of its collar cells, the fertilization takes place inside the sponge and the larvae are expelled into the water. They release their sperm in the water to float in the sea currents. Sea sponges are hermaphrodites which means they can have the characteristics of both male and female. These carnivorous sponges feed on tiny crustaceans. Some sea sponges have become carnivorous due to lack of the food they would eat otherwise. So a few sea sponges could possibly filter a sea within a day. The quantity of water that passes through in a day is gargantuan – about 20,000 times its own volume. ![]() They usually simply filter the water of the ocean or sea by breathing in and out of these pores and take in any bacteria, plankton that would serve as food, and oxygen through the neatly-divided canals. But what do they eat and how do they eat it? As your bathroom sponge has holes, so does a sea sponge. These incredibly-colored sea sponges place themselves under water in such a way that they have a solid base to hold and grow onto and an abundant supply of food.
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