Felty Fingers or Velvet Horn
A series showing the route to identifying to species-level most Codium seaweeds.
One must snip the tip from a frond and smear the result on a white board or glass. With a good eye glass is should be possible to see the Utricles and their configuation.
See -
http://www.algaebase.org/search/species/detail/?species_id=y4da8b7c3d4858bb2
World Distribution -
https://www.gbif.org/species/5272096