The larvacean Oikopleura labradoriensis produces a fragile mucus 'house' to help it filter small particles from the water. Image courtesy of Arctic Exploration 2002, Per Flood, NOAA/OER.
The larvacean Oikopleura labradoriensis produces a fragile mucus 'house' to help it filter small particles from the water. Image courtesy of Arctic Exploration 2002, Per Flood, NOAA/OER.