mckittre's Identifications
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robertweedenΠεριγραφή
10-15 mm
Found with Onchidoris bilamellata (coincidence?) under rocks at low tide. Quite common.
According to https://repository.library.noaa.gov/view/noaa/14990 there are 7 species of free swimming flatworms recorded from Alaska. Of these Nexilis epichitonius and Nesion arcticum do not reach this size and can be ruled out, as can Kaburakia excelsa which should be considerably larger. Acerotisa arctica seems to be known from only one species collected at Utquiagvik at the Arctic Ocean. I was not able to find any information about Notocomplana sanjuania or Notoplana longastyletta even under any of their synonyms.
Pleioplana atomata (also known as Notoplana atomata) seems like the most likely candidate. It is 9-28mm; found under stones and weeds in intertidal zone and matches iNat photos well.
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robertweedenΠεριγραφή
At low tide there were quite a number of these very tiny (2-4 mm) periwinkles marching across the sand away from the rocky shore out toward the sea.
A number of other periwinkles present in the rocks, but these were the only ones I saw trekking across the sand.
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Γένος LacunaΠαρατηρητής
jennifer_cliffordΠεριγραφή
eggs? on unidentified kelp (observation included on this date)
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robertweedenΠεριγραφή
On brown kelp at low tide. Rock & sand intertidal flats. Only found the one, so not common.
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robertweedenΠεριγραφή
Am I correct in thinking that the small white thing shown in the 2nd photo is a young Serpula columbiana? And the pink ones as well, maybe?
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