Back in the Water

I had not been in the water for many weeks due to bad weather, work and laziness, but as the sun was shining last Tuesday and there were indications from social media that the plankton bloom had gone, I went back in for a snorkel. The water has warmed up, although the viz was not as good as I had hoped. I swam a bit further than my usual shallow rockpools to explore the kelp forest. Pollack, wrasse, mullet and sandeels swam about. I noticed a line with crabpots starting very close to shore, something I had not seen before. Unlucky spider crabs and some lobsters could be seen in the pots. Below a Spider Crab that was still free….

After exploring the slightly deeper waters I went back into the pools where the viz actually cleared up a bit. Seaweed-wise, things have deteriorated a bit compared to early spring, but it was a very nice swim around all the same!

Natural Aquarium

A quick posts of some wide angle photos I took at the start of this month. The seaweeds were just past their prime but still looked nice and the viz was really good. It was great to slowly swim through the water in my usual spot between the rockpools ‘proper’ and the kelp forest. Just like swimming in a giant aquarium! Not too many fish or other animals to be seen. I always manage to suprise one big resident Ballan Wrasse. Other than that there were tiny Pollack and some Two-Spot Gobies. I have not been in the water since because the weather (wind) has not been great; maybe next week! Btw, I am also on instagram: @an_bollenessor.

Red and Green

Just a very quick post: went for a snorkel today as the sun was shining; there was some wind so the viz was not the best. Snapped a lot of ‘6’s but I liked the green Ulva lactuca (sea lettuce) and the red Sphaerococcus coronopifolius (berry wart cress). Both are plants (‘Plantae’) and not related to the brown kelp in the background (which is more closely related to potato blight!).

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!

Jellyfish

Facebook/instagram and even news websites have been awash with Barrel jellyfish photos and videos the last week and so I had to get a piece of the action! I had seen these gentle giants in previous years but had not tried to take any photos in earnest. I snorkelled out from the beach in Falmouth and after 200 meters or so I sure enough found three or four (they occasionally came close to each other but there of course was zero interaction). Barrel jellyfish Rhizostoma pulmo can in rare cases have a bell 90 cm wide but these were smaller, maybe 90 cm in length. I dove to take shots from below again and again: good exercise! I learner to hold my breath so the shot would not be ruined by air bubbles. I tried some over-unders but the shore was far away and so ended up only being a sliver, tricky!I tried some downward shots as well, which were much more gloomy. I saw a lone Blue jellyfish and a couple of Compass Jellyfish Chrysaora hysoscella. They are much smaller and have longer tentacles that unlike the Barrel jellyfish can sting (but not badly). Jellyfish are a great subject, beautiful and not rapidly swimming off! I hope to go back soon and try some more shots. (I will have to make sure to wipe the dome port occasionally as I had to spot-fix quite a bit).

July Seaweeds at Castle Beach

A whole bunch of photos of yesterdays snorkel at Castle Beach. The viz has cleared up, although nothing like the fabled June 2017 viz, will it ever be as good again?! (see here). There are lots of yellows and browns, some greens, a substantial dash of blue of the rainbow wrack but hardly any reds and purples at this time of year. The glow of the sun exarcerbates the yellowish vibe, but somehow I suspect the colour temperature of the Olympus somehow is a bit off compared to my old Canon. I am not entirely sure about this though, and in theory this is all correctable postprocessing, I just don’t know how!  The photo below shows some of the common species, from the bottom right to top left: Cladostephus spongiosus, Dictyota dichotoma, Asparagopsis armata, Cystoseria baccata with Sargassum muticum in the background. Ij the second photo it is obvious that the Wireweed and Rainbow wrack are quite dominant, same for the Hairy sandweed Cladostephus spongiosus. The Thong (or Spaghetti) weed is covered in fuzzy epiphytes. I will keep practicing for when the reds and purples come back in autumn!

Macro Practice III

What friends predicted happened last Sunday morning: someone scrambled down the rocks to check if this figure lying motionless in a shallow pool was dead or alive. Luckily, I was feeling very alive indeed, watching a sizable Spiny starfish Marthasterias glacialis moving over the rocks using its hydraulic tube feet. A beautiful blue-grey colour, the surface of these animals are very richly textured. I am not sure exactly what is going on at the tips of the arms: the very end shows a red organ, potentially light sensing. It is surrounded by nodules, which might be the precursors of the centres of new plates covering its body, or something else. The tube feet at the tips are smaller and orange-tinged and I am again not sure whether they are just newly developing or having special sensory functions. I noticed the madreporite at the top of the animal: this sieve plate is involved in pumping the water in the body for hydraulic locomotion. It resembles a stony coral ‘madrepore’ colony, hence its name. In general, the seastar surface resembles a coral I think. The photos are nice, but I know I could do a lot better: next time!

The plankton bloom has arrived….

A sneaky worktime dive today: the weather was beautiful, sunny and windstill and the tide was great. However, unfortunately the water was one turbid mass of snot: the spring plankton bloom has started! It was impossible to take good photos; with a fisheye you can get very close to the subject (CFWA ‘CloseFocusWideAngle’) minimising the amount of snot between subject and lens, but this only works up to a point! I had a go anyway. The seaweeds are in decline as well, see the fuzziness of the iridescent Osmundea truncata above. Below some shots of my alltime favourite the spectacularly iridescent Bushy rainbow wrack Cystoseira tamariscifolia: Finally, the species Gelidium attenuatum (?), a common, thin and shiny species I would like to know the identity of, a rock with lots of buttons of Himanthalia elongata and a Snakelocks anemone amidst the Harpoonweed. Not sure when the bloom will be over, but I think I won’t bother going back over the weekend!

Some more seaweeds

Last Friday I went for another very shallow dip at Castle Beach in Falmouth. Even though the weather was pretty abysmal, it was definitely worth it! Here a small selection of photos, again the quality is not top notch but many pretty species to see. The first pic below shows the Hairy sandweed Cladostephus spongiosus remnants the Slender-beaded coral weed Jania rubens featured in the last post tend to attach to. After that, some Chylocladia verticillata, Dumontia contorta with Grateloupia turutura (past its prime) in the background, Heterosiphonia plumosa under a small overhang, a thin red (Rhodophyllis irvineorum? awaiting comments on the Seaweeds of the NE Atlantic facebook group) and finally Chondrus crispus and Dictyota dichotoma.