Starfish Report 2023

Healthy adult P. ochreceus.

I conducted my informal annual survey of a local beach a few weeks ago and found the wasting-syndrome situation holding, relative to past years. The species recorded in the past are present in similar number, with a possible bump in the number of Pisaster ochraceus, the purple starfish. In that case I noted a heartening continued presence of adults with no noticeable infection or mutilation, supported by what I believe is a modest rise in the number of youngsters.

As this iconic North Coast star all but vanished at the height of the pandemic, I was touched to note this.

White E. troschelii.

With any good luck, this old friend is back to stay.

Evasterias troschelii, the mottled star, held the lead as the largest population on the tidelands since reclaiming first place from Dermasterias a few years back, though they still run small compared to pre-SSWS norms. Together with what may be signs of plague in two of the largest specimens, this may be a bit of a blue note. (See photographs; one individual appears unusually white about the disc, and a ray of another seems whiter and weaker than normal where it's been thrown over a cobble. Compare with the photos on this page. Again, I'm relying solely on 60 years of familiarity with the starfish of my homeland; this wasn't a scientific survey, and I may have misread the cues.)

So Evasterias may still be dying

Possible infected ray.

before it reaches full size. If so, the breeding population is keeping apace, so there are grounds to hope for an evolved solution.

For the rest, leather stars (Dermasterias imbricata) seem about as present as before, and sadly, Pycnopodia helianthoides, the sunflower star, and Pisaster brevispinus, the giant pink star, just as extinct. I wasn't able to observe the blood stars (Henricia leviuscula), which barely reach the intertidal zone, because the tide was a few feet higher than those I've caught in the past.

Final analysis: though the beach apparently still isn't clean, all in all, an encouraging show by the new normal.

Adolescent P. ochreceus.