Researchers first recorded the movement of marine sponges, which were previously considered sedentary organisms. An unexpected opening is reported in the article published in the journal Current Biology.
Scientists examined the underwater mountains of the Langsen Ridge in the North-Arctic Ocean with the help of a uninhabited underwater apparatus. They found traces that left the sea sponges – multicellular animals, which are attached to the bottom and filter water, supplying themselves with nutrients. They are deprived of specialized tissues and organs and consist of various cells forming both the surface of the body and internal channels through which water passes.
There are evidence that sponges are actually able to make movements due to reduction and expansion of tel. This allows them to avoid adverse environmental conditions, find places with plenty of food and distributed after reproduction.
Researchers discovered in the leaks of sponges of the remnants of the sprocket – mineral structural elements performing the support function and, apparently separated from the body during movement. Experts believe that spike fragments can serve as a source of food for other sponges, including young. Alternative explanations were also excluded, for example, the impact on the side of the rapid flows and the slopes.