In humans, the buildup of nitrogen bubbles in the blood during a rapid ascent from deep water is called the bends. Their research, presented in January at the American Geophysical Union, has revealed a river landscape more bizarre than previously imagined. Parts of the Congo River measured around 720 feet deep, almost as far down as the twilight zone of the ocean. The mondeli bureau is one of six fish in the lower Congo to develop elongated forms, lose their pigments and shrink their eyes. They’re also investigating the genetics and physiology of other blind fish in the river, to work out whether they’re using similar genetic mutations to adapt to the river currents.

Source: bd News24 February 26, 2020 10:41 UTC