Thanks Helen. - a rare Irish seaside (-holiday) Observation. Each ob is (supposed to be) only one algae; however, the tag is not YET used.
One day, when iSpot expands Groups and correctly EXcludes Algae from Plants (but NOT like in iSpotZa, where seaweeds are other Organisms - Chus sayin'), then a useful collecting tag will be....well.... useful, for the small band of well-paid Curators to have a cheap ball.
Another might then be as useful - FRESHWATER Algae <<KLIK?