I love the name of this Orange Ribbon Worm, Tubulanus polymorphus , because it truly is polymorphus. In this case, I gently pulled it a little bit out of its hole, and its form completely changed. This is only the second time I've seen one of these.
There were crazy numbers of nemerteans out hunting. Made me happy to be large.
Worm was crawling over and into tubes of Phragmatopoma californica
Nemertea is a phylum of invertebrate animals also known as "ribbon worms" or "proboscis worms". Alternative names for the phylum have included Nemertini, Nemertinea and Rhynchocoela. Although most are less than 20 centimetres (7.9 in) long, one specimen has been estimated at 54 metres (177 ft), which would make it the longest animal ever found. Most are very slim, usually only a few millimeters wide, although a few have relatively short but wide bodies. Many have patterns of...