One of our mystery organisms (pictured) was a parasite on one of the juvenile spratts caught in the rock pools. Lewis had narrowed it down to probably being a copepod, and this was confirmed by David Fenwick and Mike Moon, who identified the species as Lernaeenicus sprattae. Commonly seen on Spratts in UK waters, it gets its name from its preferred feeding mode, attached to the eye of the unfortunate fish. Extensive parasitism is possible, and this can result in considerable deterioration in the health of individual fish. The two green appendages are egg sacks.
Some of the other organisms featured in the talk are shown int he gallery below, alongside some photos taken underwater on the same site:
We had a very enjoyable visit to the beach at Roa Island on 24th August July, the weather was super, the water (fairly) warm, and there was plenty to see; so a great success! We will be looking at some of the photos taken at our meeting in August (see our diary for up to date details), and putting these into context of our long-standing interest in the marine life at Roa, and the Bay area in general.
Thanks to everyone for coming along – we look forward to seeing you again in August!
Above: Photograph of the Roa Island lifeboat station at sunset, with Piel Castle in the background, taken Wednesday 19 June 2013
Our next monthly meeting will take place at Roa Island, a site which has been visited and surveyed by our group for at least twenty years! The meeting, from 18:30 on Wednesday 24 July, is an informal shore walk to coincide with an exceptionally low tide, so we hope to see a lot of sea life exposed on the beach and in small pools that we would normally have to dive so see.
Just so the divers aren’t left out, we have a small number of high water dives planned in the run up to the shore walk*. The first of these was on the 19th June in near perfect conditions. Diving close by the pier and lifeboat station we saw a number of the same creatures underwater, that we will get to see exposed in a few weeks time.
At our August meeting (back at Capernwray Dive Centre) we hope to bring together the shore walk and dives (and maybe earlier survey work) to get a ‘hands on’ picture of life above and below the tide at this very interesting local site.
Please note: The walk in July is suitable for (accompanied) children, but be aware that the beach is very muddy, and you should wear shoes or boots that you are happy to get wet and dirty. If you bring a camera – best to have an underwater housing for it in case… You are free to explore, but most people stay within site of the pier, so it is not important if you arrive late.
Journey time from Lancaster – about one and a half hours, all welcome!
* Please note that dives at Roa Island are very dependent upon the weather, so there are a number of possible dates in the diary that we shall ‘cherry pick’ from…
Meet: Warton Crag car park on Crag Rd Warton at 10:00am. This large, free, car-park is situated in an former quarry.Grid Ref: SD 492723. Please share cars if possible. There are no public toilets at the car park, or in Warton Village.
Route: Leave M6 at J35. Take A601(M) to J35a. Take A6 North. After about 0.6 miles turn left on a minor road to Warton. Turn left along Main Street then right into Crag Rd. Warton Crag car park is on the right, approx 0.5 miles along the road.
Walk: A circular walk around Warton Crag and Silverdale taking in Crag Foot, Quaker’s Stang, Jenny Brown’s Point and Jack Scout. A mixture of footpaths, bridleways, embankments, shoreline and some minor roads. Varied landscape, superb views and attractive woodland.
Distance: About 9 miles depending upon the wishes of those coming and the weather. The highest point is Warton Crag (163m) and lowest is the seashore,. Quite a lot of ups and downs with a few short steep sections.
Bring: Food for lunch and a drink. At least 1L of liquid if the weather is hot. Walking boots are recommended – as the limestone quarry can be slippery when wet.
Maps: OS Landranger no 97 Kendal, or Explorer OL no 7, Lakes SE.
An inch of snow greeted early risers in Lancaster on Saturday morning – but the weather held off with just a little wind-blown snow to add to the atmosphere on the walk. This was a repeat visit by the group to Walney – (last visited in summer 2009).
Many thanks to Gordon for organising a very pleasant day out!