Around here, those scientists include purple-panted PhDs such as our good neighbor, David Porter. Here he’s collecting rockweed specimens at low tide in our intertidal zone. (Yes, he asked for permission and received it enthusiastically.)
It’s all part of a survey by the Blue Hill Peninsular Rockweed Forum, which he co-directs with Allison Snow (another sun-defying PhD). Among other things, the Forum advocates for the conservation of intertidal rockweed (Ascophyllum nodosum).
As I understand it, the current survey is being fielded in about 10 sites in the Penobscot Bay area, where the condition, age and growth rates of rockweed will be assessed, among other things. The results should provide further insights into whether and/or how to harvest rockweed to avoid lasting harm.
Here’s an interesting fact provided at a recent lecture by David and Allison: Once it gets well started, rockweed generally forms a single new, egg-shaped air bladder on a growing frond each year.
That means that you can count the spaces (segments) between each bladder on the plant’s primary axis to estimate how many years of bladder-producing growth have passed. You need to be sure that you pick an undamaged frond, which is what David did before collecting each specimen.
David’s trusty sidekick Brody supervised the operation and demonstrated that he wasn’t mad by staying in the shade:
Another interesting (but useless) fact provided by AI: Noel Coward wrote the 1931 satirical song about mad dogs and Englishmen going out in the sun to chide British colonialism. The song apparently was inspired by a comment by Rudyard Kipling. Neither Coward nor Kipling ever said anything clever about rockweed, as far as I know.
(Images taken in Brooklin, Maine, on August 6, 2026.)
