More Scummy Pools

As in Falmouth, the rock pools in Flushing are not looking that great at the moment. Lots of the Corallina has turned white/died (although the clumps in my tank are still their normal purple!). Of course, many species were still thriving, Grape pip weed Mastocarpus stellatus (top), Bunny ears Lomentaria articulata (bottom), new Thong weed Himanthalia elongata ‘buttons’ and a young blade of kelp along with some green Ulva:IMG_0977Among the seaweeds that were thriving was Slimy whip weed Chordaria flagelliformis (I am by no means a seaweed expert and I might be wrong about this, please comment if I am!) and also the beautiful Harpoon weed Asparagospis armata growing as an epiphyte on some darker coloured False eyelash weed. Harpoon weed is invasive and so a good candidate to do well int he aquarium (as most invasive species are quite opportunistic and not too finnicky). It died off in the tank before, but I decided to bring some home to try again now I have a chiller.IMG_0964

IMG_0970Another tangling invasive species: Bonnemaison’s hook weed Bonnemaisonia hamifera (a characteristic curved hook can be seen in the top-middle):IMG_1020Loads more seaweeds to be found but I will save those for another time. All kinds of tunicates pop up in spring, some of them pretty (see for instance here), some of them less so. For instance the invasive species, the Leathery sea squirt Styela clava and an out-of-focus photo of a second, large (>10 cm) species that did not get a lot of response on the NE Atlantic Tunicata FaceBook group. Aplidium nordmanni was offered, see here for a much smaller version of that species. Not a looker either in any case!IMG_1055

IMG_1030I brought my little aquarium net and found many juvenile (<1 cm) fish as well as Mysis shrimp. The fish look like gobies but it is hard to see. They were completely translucent and so you can see what this one just ate. I should take some bits of seaweed home to see what comes crawling and swimming out under a little USB microscope (quite easy to make little videos). It is hard to come up with decent images squatting and squinting on a slippery rock with a salt-encrusted mobile phone!

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Prussia Cove

We went to check out Prussia Cove (named after ‘the king of Prussia’ John Carter who used it as his smuggling base in the 18th century) this weekend for some snorkeling action:

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The weather was great but there was quite a lot of wind and so the water was choppy and the visibility really bad. We saw hardly any fish. The seaweeds consisted mainly of the common Thong weed Himanthalia elongata and Bushy berry wrack Cystoseira baccata. There were not many rock pools. The only interesting find there was the pretty Brown tuning fork weed Bifurcaria bifurcata:

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castle beach

Although cold and rainy on the bank holiday Monday, the weekend weather was glorious (and low tide was ‘low’), so it was off to Castle Beach in Falmouth:

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To me this looks as good as a coral reef! Loads of Harpoon weed Asparagopsis armata, Thong weed Himanthalia elongata and Oarweed or Tangle Laminaria digitata (there are two similar kelp species, but these remain more erect when above water my guide tells me). Also quite some of my favorite Bushy rainbow wrack Cystoseira tamariscifolia shining blue:

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Also iridescent: a tiny (<5 mm) Blue-rayed limpet Helcion pellucidum. Normally found on Laminaria kelp, this one sat under a rock:

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Especially on the middle shore, there was quite some change in seaweed composition, with lots of Ulva and similarly bright green, slimey algae in the rock pools. The abundant Shore clingfish Lepadogaster lepadogaster had been laying eggs under rocks everywhere:

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You can even see the embryo eyes, I am very happy with my olloclip macrolens (although photography in the bright sun is difficult, especially if you do not want to disturb the animals/eggs too much). There were a couple of quite big Edible crabs Cancer pagurus around. The combination of a trembling crab and a trembling hand resulted in a sub-optimal macro photo of its carapace but it is still a neat pattern:

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Strangely (and mostly, annoyingly), the second pump of the aquarium broke down before the weekend and I ordered two new ones. The aquarium has not improved without filtration of course. I will be traveling quite a bit over summer so I will not experiment much with it in the near future.