If something looks kind of seaweedy, is there a "safe" identification?

[chemistree]

@arboretum_amy

If only there was a (taxonomically irrelevant) “marine life” search category

I’ve often wished for the same thing. While filtering by place could serve some of that purpose, in my area (the Pacific Northwest Coast), the place boundaries are heavily biased in favor of terra firma. There is a feature request for implementing standard marine places, though I’m not sure that includes the shorelines.