Sponge is a porous material with good water absorption, so it is often used as a cleaning tool. In addition to the sponge that people use every day, there is a creature in the deep sea with similar composition to ordinary sponge, but what is terrible is that it turns out to be a "carnivore".

The ocean is the origin of life on earth. Thousands of species were born from the ocean, but they also branched and evolved from the ocean and went to land. At the same time, the ocean is also an extremely dangerous place.

People know no more about the deep sea than the universe. According to scientists' exploration, the deepest part of the earth is the Mariana Trench, with an average depth of over 7000m, and the deepest part is over11000m, which can even hold the whole Mount Everest.

But in fact, humans don't know where the end of the ocean is. So, under the half imagination and half guess, the deep-sea behemoth in science fiction movies was born.

The common "sea monster" is actually just an enlarged version of ordinary marine life, such as sea snakes and squid that are tens of meters long, but despite this, people are still convinced that there is some kind of monster thousands of meters below the sea floor.

However, in the thousands of meters deep sea, due to the lack of food, life here is very intense, and even tends to kill each other. Octopus is a deep-sea fish, about 15 meters long. This ugly and cruel creature will eat its own kind without food.

In addition, some scientists believe that the deep sea area is in a state of high pressure, hypoxia and food shortage. Between 2000 meters and 3000 meters, marine life can still feed on food scraps falling from the upper layer, but below 3500 meters, there are no food scraps or groups of fish in this area. Therefore, it is difficult for large organisms to survive in this condition.

Because of the harsh environment, in the 3500m environment, even plants have become carnivores, including the familiar low-level creatures-sponges.

Harp sponge is a kind of deep sea sponge. Unlike other sponges, this plant has evolved the need to "eat meat". They are branched and covered with barbs, which can trap small crustaceans.

From the appearance, the harp sponge is like a beautiful ancient harp, but these creatures do not produce wonderful vocal music. Instead, they are distributed in a network, wrapped in thin body membranes and slowly digested.