Cormac MacFhionnlaoich

@cormacscoast.bsky.social

Hiking guide providing walking tours along Ireland's Atlantic coast Cliffs of Moher, Burren,Slieve League Zoology Marine Biology Geology Botany Local history

A "Seaweed Tattoo" on a rock at lowtide. Seaweed dries on the rock at low tide and the chemicals released during the drying remove a thin layer of algae from the rock just beneath the Seaweed. When the tide returns and washes away the dried Seaweed it leaves behind an imprint (Tattoo).

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The large purple patch in the water at the bottom of the Cliffs of Moher is a huge accumulation of Moon Jellyfish (Aurelia aurita). It's hard to get an idea of scale when you're looking down from a height of almost 700 feet, but I'd say that there's a few hundred thousand of them in it 🪼😲

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(1/2) As a child I'd often spot these "oil spills" in small pools or roadside drains and assumed it came from vehicles or dumped waste. I later learned that most of it was organic - and actually coming from soils or rocks in the area. They way to tell the difference is by touching the surface.

(1/2) A Snakelocks anemone (Anemonia viridis) and a Strawberry Anemone (Actinia fragacea) on the shore during lowtide. Strawberry Anemones like many other intertidal dwelling anemone species, have the ability to close up and hold water inside when the tide goes out.

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