Branched Dendronotus    Dendronotus frondosus

One of several species of Dendronotus nudibranch in Puget Sound, it is smaller (to 4 inches) and a deep red in color than other forms.  However like other dendronotus species it is very frilly.  It was picked off a float at Boston Harbor Marina where it spends it’s time munching on hydroids.

An interesting habit of several dendronotus species is their ability to swim.  Quite often they can be seen, either at night or during the day, ungulating back and forth swimming near the surface of the water.  It is not known why they swim.

It ranges around the world in the northern hemisphere from the intertidal zone to a depth of over 1000 ft.