Symsagittifera roscoffensis

I have the chance to live by the sea in the north west of France, in Brittany. Here, it’s quite easy to sample Symsagittifera roscoffensis directly on the beach during the low tide. They basically look like this under the foldscope : These free-living acoelomorph worms, formerly called Convoluta roscoffensis, have a characteristical green color…