In tide pool
Found in a muddy location. Goes very slowly. Estimated to be about 7 cm.
About 1.5" long, under cobble over sand.
蚯蚓 Earthworms (Family Lumbricidae)
This small creature has really puzzled me since I noticed it under water at low tide! Its crown was only about 3/4" across, and a bright red with shades of purple. When I touched it, it appeared to have two openings, like a tunicate, and no operculum, with a squat little body, not a long tube. I kept checking for about 5 minutes to see if it would extend its crown again, and it did not, unlike most tubeworms.
I wonder if this beautiful worm is some type of Eudistylia? The sunset-orange crown looks very feathery, and measured about 1" across. Its tube is short, just about 2" long, and covered in bits of material that must have adhered to it. I noticed it under water at low tide, living beside a Pink-tipped Green Anemone.
The annelids (also called "ringed worms"), formally called Annelida (from Latin anellus "little ring"), are a large phylum of segmented worms, with over 2,000 modern species including ragworms, earthworms and leeches. They are found in marine environments from tidal zones to hydrothermal vents, in freshwater, and in moist terrestrial environments.They are bilaterally symmetrical, triploblastic, coelomate organisms.They have parapodia for locomotion. Although most textbooks still use the traditional division into polychaetes (almost all marine), oligochaetes (which include...