Last week I went for a little swim at the usual spot at Castle Beach. The viz was nowhere near as good as last month, but still OK. There are schools of sand eels and sand smelt and I even saw an eel. The contrast between growing brown seaweeds and withering red seaweeds has become even greater. Below you see some yellowed Harpoonweed and a ‘forest’ of Thong weed covered in epiphytes. As the light was a bit subdued, I focused on the most shallow area. The bare parts of the rock are covered with barnacles, dog whelks, sting winkles and limpets. The seaweeds are mainly Serrated wrack Fucus serratus, Sea lettuce Ulva, Grape pip weed Mastocarpus stellatus, some Ceramium and Laver Palmaria palmata, as well as Dumont’s tubular weed Dumontia contorta.
Three weeks back I had to pick someone up from Newquay airport and decided that it would be a good idea to combine that with some rock pooling action on the North Coast. I was told that the Pentire end of Fistral Beach was a good spot for Dahlia anemones and so the decision was made. Unfortunately I did not find any anemones, but it was a beautiful day nonetheless. The relatively few North coast sites I have explored all seem a bit barren in comparison to the South coast: more exposed, with sand meeting scoured rocks, leaving only hardy seaweeds, mussels and beadlet anemones to cling on. I need to spend some more time to find the right spots that’s for sure. The top of the cliff contained some rock pools, but they were quite milky due to the recent weather. They were full of the beautiful Brown tuning fork weed Bifurcata bifurcata (as I was on an anemone hunt, I was hasty and most photos did not come out especially nice, so see this old post for a nice photo of this species). The rocks were very slippery due to the (edible) Laver seaweed Porphyra (front of the next picture).At the base of the cliffs were some gullies, the largest of which is locally known by the rather grandiose name ‘Cave of Dreams’. No major finds here, but it was nice to see the many colour varieties of the Dog whelk Nucella lapillus (egg clusters in the background). The second photo is an especially pretty specimen; I only later noticed the green worm (probably Eulalia viridis) and the reflection in the beadlet anemone of me holding my iPhone! Beadlets are super common here. It is interesting that this species has two main colour varieties (red and green), just like the Snakelocks anemone (green and purplish) and the Plumose anemone (white and orange). This might be a coincidence but I find it intriguing. Lastly, some Sea pink or Thrift Armeria maritima.
Last Sunday I ventured to the north coast for a rock pool ramble with Matt Slater of the Cornwall Wildlife Trust (see this great blog) and the local marine conservation group (who also have a nice blog). I actually had never rock pooled at the north coast before (shame on me) and so it was nice to see this exposed habitat, quite different from my main haunts at Castle Beach in Falmouth and Trefusis Point in Flushing:
The rocks were much more bare and the number of animals a lot lower. However, there were quite some seaweeds. I finally saw (the edible) Laver Porphyra spp (probably Black laver Porphyra dioica):
Another edible species, Dulse Palmaria palmata, was incredibly common here:
I won’t add too many seaweed pics in this post, but I liked this shot of Serrated wrack Fucus serratus:
Brown and yellow Flat periwinkles Littorina obtusata (or possibly Littorina mariae, I did not bother to check) where common:
We found a Shore cling fish Lepadogaster lepadogaster and a Five-bearded rockling Ciliata mustela:
I found a couple of pieces of a branched seaweed covered in the bryozoan Electra pilosa:
All in all a good session. I hope to go back soon to take better pictures of the seaweeds!