Muddy Foreshore

We have had some sunny spells but generally the weather has been disappointing lately, especially with regards to wind and waves. I did some snorkels with the fisheye lens to try to capture the seaweeds but the viz was such that I did not even bother to copy the images from my camera to my laptop….A crying shame as it means I have to wait a whole other year to capture the seaweeds in their full glory! (although even when most seaweed species are in decline, with good viz and some sun the pools can still look fantastic later in the season, see for example HERE or HERE). Anyhow, instead of taking my fisheye lens underwater, I tried it out on land instead, specifically on the muddy foreshore of my village Flushing. (A wide angle lens would have been better for this – no warped horizons etc – but I don’t have one.) I had a go at this a while back, before I really knew about softboxes to disperse flash light….what can I say, I am a slow learner… I recently bought a flash and a trigger so I can hold my flash in a softbox near subjects which is the way forward for these types of shots. Although not home to the most spectacular animals or backgrounds, it was fun playing around a bit. Top left: Montagu’s Breadcrumb Sponge (Hymeniacidon perlevis), top right: something that looks superficially like Elephant Hide Sponge (Pachymatisma johnstonia), although the colour and texture are off. (This specimen will be sampled by David Fenwick for a close look at the spicules (if it is a sponge and not a seasquirt!)

There are many oysters here too, mostly the invasive Pacific oyster (Magallana gigas) (pictured above), but also the native oyster (Ostrea edulis). I hoped to get a shot of an eel, but the ones we caught were small and a bit too active. We also found rocklings, shannies, rock gobies, a sea scorpion and interestingly a dragonet and a painted goby (I had not seen one of these before). Although there are quite a lot of interesting species to be found in the mud, I hope I’m able to go snorkeling in some clear blue water very soon!

Mud pooling

When it was very low tide last week, I decided to skip the ‘rock pools proper’ on my local beach in Flushing and to check out the zone just below where the rocks and the sandy bottom of Penryn River (an arm of the Fall Estuary) meet. All common rock pool inhabitants – winkles, top shells, edible crabs, worm pipefish and shannies – still live here, but some other organisms are more abundant here than in the rock pools.IMG_2881

Sponges are very common in this silty environment, especially the Estuary sponge Hymeniacidon perleve:IMG_2877

The Breadcrumb sponge Halichondria panicea:IMG_2882

In addition to sponges, I noticed quite a lot of the colony-forming ascidian Botrylloides leachi (see previous post). That explains why I could also find a couple of European cowries Trivia monacha, their predator. Also very common here are the Variegated scallop Chlamys varia and the Thicklipped dog whelk Hinia incrassata (top right picture). I am not sure what the slimy beige stuff is!IMG_2920

I spotted a couple of new things as well, the Red speckled anemone Anthopleura ballii:IMG_2901

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Also a first, a Sea spider Nymphon (gracile?):IMG_2886

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I found a large patch of these beautiful eggs:IMG_2931

and someone guarding them, a rock goby Gobius paganellus:IMG_2935

A Butterfish Pholis gunnellus:IMG_2947

Very common were little Squat lobsters Galathea squamifera (no picture), rapidly swimming backwards to escape. Even more abundant were these little Hooded prawns Athanas nitescens:IMG_2924