Anenome?

mordeith

I was wondering if anyone had an idea what is in the pic here. There area few of them on the rocks near the wall at Ardmore.

aidoh

I'm only seeing loooooads of barnacles, some seaweed and the off limpet in that pic.
Anemones are soft little wine-coloured blobs. They're really common and once you see one of them you'll start to see them everywhere.

mordeith

Im talking about the black concentric rings at the bottom of the hole that the barnacles and seaweed are on

aidoh

That's just the ripple pattern in the rock I guess.
These are the anemones we get in Ireland: http://www.planetseafishing.com/images/content/tutorials/386/fishing-bait-parp-sea-anemone-0001__large-body.jpg

locum-motion

mordeith wrote: »

Im talking about the black concentric rings at the bottom of the hole that the barnacles and seaweed are on

I was wondering was that what you meant.

aidoh wrote: »

That's just the ripple pattern in the rock I guess.
These are the anemones we get in Ireland: http://www.planetseafishing.com/images/content/tutorials/386/fishing-bait-parp-sea-anemone-0001__large-body.jpg

I agree, that is probably just a pattern on the rock. It certainly isn't an anemone, anyway.

mordeith

locum-motion wrote: »

I agree, that is probably just a pattern on the rock. It certainly isn't an anemone, anyway.

The thing is this isn't the only one on that part of the shore. There are at least five of these holes with the similar black formation. The holes they were in varied in size, depth and shape so I don't belive they are man-made. Whatever the black formation is it appears to have made the hole in the surrounding lighter coloured rock.

aidoh

My guess would be that it's the pattern left in the rock from either how it was formed or how it's eroded by the water as the rock pool fills up and empties. I'd say people in the geography or palaeontology forums might have an idea what it is.
It looks like basalt to me but I'm not really up to scratch at all when it comes to geology.
It's really cool looking anyway!

locum-motion

mordeith wrote: »

The thing is this isn't the only one on that part of the shore. There are at least five of these holes with the similar black formation. The holes they were in varied in size, depth and shape so I don't belive they are man-made. Whatever the black formation is it appears to have made the hole in the surrounding lighter coloured rock.

Yes, but an anemone is small and squidgy. What you photographed is a foot in diameter and is made of rock.

mordeith

locum-motion wrote: »

Yes, but an anemone is small and squidgy. What you photographed is a foot in diameter and is made of rock.

Fair point.

Mickeroo

Moved this from Zoology to Geography as it's more a geology question and there's no geology forum.

CmacI

hi - it might be the remains of a fossil sand volcanoe?