I. steinbachi is a rheophilic species that lives in fast flowing and very oxygenated waters.
However, most fountains are unable to produce a large area of oxygenated water.
They can burrow up to five times their own height, and still keep connection with the surface for oxygenated water and food.
The gas escapes into the atmosphere, the oxygenated water flows back through the downstream pipe.
The bright red exposed gills are often found closed against the body in cool, highly oxygenated water.
Fortunately there were steady currents of well oxygenated water, so breathing was no problem.
The prevailing north wind generally pushes oxygenated water into the oxygen-depleted area.
Acorn worms breathe by drawing in oxygenated water through their mouth.
There is the supply of new oxygenated water brought in with the tides.
The fins are used to propel streams of oxygenated water from the surface along the larva's body.