Late May Seaweeds

A day without wind last Thursday and so time for a look at the seaweeds. As expected, the pinks, reds and purples have made way for browns, yellows and greens. The water was a bit cloudy but with the wide angle lens you can get close up minimising the effetc of the bad viz. Wrasse were tending to nests and tiny pollock swam around but otherwise I could not spot not many animals; the exception was a big spider crab who was as startled as me. Above the common species Thin Sausage Weed Asperococcus fistulosus. Not the most beautiful species but let’s say it looks interesting. To my horror, I discovered that my favourite seaweed Bushy Rainbow Wrack has changed genus and is now called Carpodesmia tamariscifolia instead of Cystoseira tamariscifolia. I hate name changes in general but this just an ugly name! Two photos of this species below as well as one of Bushy Berry Wrack Cystoseira baccata which also has moved genus and is now Treptacantha baccata… After that a floating piece of Desmarest’s Flattened Weed Desmarestia ligulata and some Pale Patch Laver Pyropia leucostica.

Flash Photography

A while back I thought it might be an idea to experiment with flash photography. Using one flashgun (strobe) I set out in my usual spot. I should have tried this a lot earlier! Although supershallow water has enough light to do without flash, a main problem (for me at least) is to balance harsh white sunlight (from above and from reflections from the white sand below) with the darker subject. By illuminating the subject, this effect evens out. I took probably almost a hundred photos of the Bushy Rainbow Wrack above and this one came out alright! Apart from the Thong Weed framing it, I like the row of Thong Weed ‘buttons’ in the foreground. I held the strobe in my hand for this one, and I used my older strobe, as my newerand more expensive manual one just not fires reliably for some reason (still trying to find out what is going wrong). Below some more strobe experiments. I really hope diving will be allowed soon so I can play around more with the wide angle lens and two strobes.

Seaweed Gallery

Some long overdue seaweed pics from the end of the seaweed bloom when the tides were low. I took many photos but few, if any, very good ones; sometimes you just are a bit out of luck I suppose. I have also started a Seaweed Gallery page (link also pinned at the top), gathering photos of as many different species I can find here in Cornwall. It is very much a work in progress and not a proper guide at all, but I hope it can help complement exisiting guides. Note that just a photo often is not enough to correctly identify species, so I have kept it at more easily recognisable things. On another note, I recently gave a ‘lockdown’ zoom presentation about my very niche hobby of taking photos of seaweeds for the Cornwall Wildlife Trust. If you are interested you can find it on youtube (I have not watched it back myself as if there is one thing I dislike it is seeing myself talk on video (actually, there is one thing I like even less and that is seeing myself talk on a video that is there to see for the whole world!)). I talked not so much about photography or seaweed biology as I am far from an expert in either topic, but more about how I started out with rockpooling when I moved to Cornwall in 2012, and how this slowly spiralled out of control and ended up with me lying facedown in rockpools year-round taking photos of seaweeds. Anyway, a few species below: Irish Moss Chondrus crispus, Berry Wart Cress Sphaerococcus coronopifolius, Red Rags Dilsea carnosa and Desmarest’s Flattened Weed Desmarestia ligulata.

some good’uns

l have not made much progress sorting through recent seaweed pics but it is easy to post two recent photos that came out well. Above the Spiny starfish Marthasterias glacialis. This seastar can grow up to 70 cm across, but on the shore you generally do not find them much larger than 20 cm. It occurs from Northern Norway down to West Africa. Below a patch of Snakelocks anemones Anemonia viridis, probably originating via binary fission. The most common anemone in the rockpools here, around half are this tan colour, the other half is green with purple tips. No one knows why. (And interestingly, it is not the only anemone species that shows two colour variants, beadlets are red or green, plumose anemones white or orange). Although the water was 9C, with the sun on the white sand it looks pretty tropical to me, a clownfish would not have been out of place! (I took a photo of this same patch in March but that one was not nearly as good.)

Mermaid’s Purse

Just three pics of the same shark egg case (‘mermaid’s purse) laid by a Nursehound (Scyliorhinus stellaris), also known as Large-spotted dogfish, Greater spotted dogfish or Bull huss. My camera was only five centimetres away from it (this technique is called ‘close focus wide angle‘). Mostly attached to perennial and tough Bushy rainbow wrack (Cystoseira tamariscifolia). 

March Seaweeds II

Some more March shots of seaweeds but this time taken in a large, very shallow pool a bit higher up on the shore. It is dominated by Slender-beaded coral weed Jania rubens together with some other favourites (but many other species, such as Palmaria, Polyides or Furcellaria are missing this far up shore). I have added the names to some species, as Francis Bunker (one of the authors of the Seasearch guide to the Seaweeds of Britian and Ireland) had done previously on the Seaweeds of the NE Atlantic facebook page for another photo (see this post). Nice to be able to get so many species into one shot. Next an over-under (well, a bit) shots for another general impression (see the shadow of my camera), some Bushy rainbow wrack Cystoseira tamariscifolia, False eyelash weed Calliblepharis jubata surrounded by other species and a tiny fluffy red seaweed (do not know which species) that has found a foothold on the bare bedrock. The photos are not as sharp as I wished unfortunately. I have another batch on the computer that turned out better luckily, will post these soon!

March Seaweeds I

Last week it was time to check the state of the seaweeds and as expected they looked glorious. Unfortunately it was a bit windy and choppy and so the viz left something to be desired, argh! These are some of the better pics. I am in the process of creating a gallery of seaweed species (just reds to begin with), see the link at the very top of the blog. This is by no means a proper guide, as for that you often need more detail than just underwater impressions, but extra images might help in conjuction with a proper guide such as  the “Seaweeds of Britain and Ireland” Seasearch book. Anyway, I have started gathering old pics and hope to add more soon. The common flat red species in the photos above and below is very pretty but it is one of these species you need to look at under the microscope so I will not attempt to label it with a name (yet). Other species can be identified more easily, such as Under tngue weed Hypoglossum hypoglossoides (two photos below). Below, Thong Weed Himanthalia elongata, Little Fat Sausage Weed Champia parvula and Juicy Whorl Weed Chylocladia verticillata and a bit of Bushy rainbow wrack Cystoseira tamariscifolia covered in red epiphytes.

Spotted Kaleidoscope Jellyfish

Two days after the last post I went back to my usual spot, fisheyelens on the camera. After a little recce it was obvious that the water was too milky, so I went back to the car and changed to the macrolens. It was overcast and the water was chilly. I’d seen some stalked jellyfish (see this great resource stauromedusae UK) the last time. Of course, when you are specifically looking for something you don’t find it, but in the end I noticed a Spotted kaleidoscope jellyfish Haliclystus octoradiatus, the most common species around here. I still struggle with my strobe, so all photos were riddled with backscatter. I could remove most of that in Photoshop luckily, but it is frustrating, especially as I had a run diving last year when I had no such issues at all. I encountered a 15 cm or so Longspined scorpion fish Taurulus bubalis as well. I cropped the shot and could put some colour back in using Windows Photos. Hope to go back over the weekend.

seaweed checking

I joined a seaweed identification get-together at the Cornwall Wildlife Trust organised by Matt Slater last week. It was fun to chat with likeminded people and also made me want to stick my head underwater again! The weather has been horrible for over half a year now and I have been in only a few times, with little chance to take decent photos, hence the blog inactivity. This has been especially frustrating as March is the best month for seaweeds (see the 2017 Falmouth Seaweeds tag) and I am missing my window. I therefore jumped in the next day. The tides were at their very lowest, actually too low for most of my usual rockpool spot! The viz was not great due to the 20+ mph winds but just about good enough for the fisheye lens. I really hope for some good weather in the next 2-3 weeks to be able to make the seaweed photos I really have in mind.The very top photo is Berry wart cress Sphaerococcus coronopifolius shot with a very shallow depth of field. The single stone above hosts a whole variety of species. The largest is Slender wart weed Graciliaria gracilis and just as the Berry wart cress it is covered in mucus threads, which must come from the tiny gastropods Rissoa parva that can be seen on it when you zoom in. To the left the wiry Black scour weed Ahnfeltia plicata. To the back the invasive Devils tongue weed Grateloupia turuturu. Green Ulva and young kelp can also be seen. Below some Harpoonweed Asparagopsis armata. The snakelocks anemones Anemonia viridis were also out in force. I hope the weather settles soon!

Olympus Photos 2019

This was the year I switched from my trusted Canon G16 compact camera (with wetlenses) to a mirrorless Olympus OM-D E-M5 II (with ‘actual’ lenses). Throwing money at things is not necessarily a guarantee for improvement, but it definitely helps! The shot above (from this post) was commended at the 2019 Falmouth Underwater Film Festival. This was made using the few times I went out with the mzuiko fisheye lens and is shot using natural light. (For some more natural light wide angle shots taken snorkelling on the north coast see this post.) I mostly used the mzuiko 60mm macrolens in combination with my strobe. The weather at the start of the year was so foul I initially used it  abovewater during rockpooling. The shot below of a Flat periwinkle is quite simple but one of my favourites ‘topside’, together with the shot of the two Shore crabs: Below are some favourite underwater macro shots (the best pics I also post on instagram). Macrophotography I find easier, as the camera settings remain quite invariable (small aperture with a short shutterspeed because of the flash) and the composition is often (but definitely not always!) simpler compared to shots of say an entire rockpool. First some taken snorkeling in rockpools. The first is a Chink shell on Bushy rainbow wrack. The iridescent nature of the seaweeds means it is bright blue or purple viewed from one direction, but a dull brown from the other. If you get it right, it makes a very striking background and it is definitely a subject I want to explore more. After that, detail of the tip of a Spiny starfish, a European cowrie and a pill isopod. Below some macroshots taken while (shore)diving off Silver Steps in Falmouth. A Blackfaced blenny, a Leopardspotted goby and a Devonshire cupcoral. Many more photos of course if you scroll down. I have now also invested in a new strobe and new strobe arms. Having two strobes will allow me to take wide angle photos without depending on (dim) natural light, for instance whilst diving. My second strobe is manual so I can ramp up the strobe power if needed for macro too. I still struggle with positioning even a single strobe, so having two will be frustrating in the beginning I am sure. I am hopeful this new investment will pay off though. As for the blog, I have updated the links page. It is high time I post an update on the tank. I have not been diving much but hopefully next year I can collect some new species of anemones for it (and of course take photos, although the two activities are pretty much mutually exclusive). My new years resolution will be to get in the water more. I wish all blog readers a happy and healthy 2020!