As a local area group we try to inform, entertain and educate people about the wonderful marine life in the seas around Britain. We do this through a programme of talks and events – both within our own lecture series, (see our diary) but also to other groups by invitation.

For some years now presentations have been moving to electronic format – Powerpoint(R) and the like, and we have struggled to borrow equipment (thanks to everyone who has helped out!), and with compatibility issues. While we have never yet had to cancel a presentation due to total incompatibility between a speaker’s talk and the equipment to hand, it has come pretty close on a number of occasions…

As a consequence it is a great relief to announce that we have been awarded National Lottery Funding to purchase our own digital projector, laptop and the associated software. While it will take us a couple of weeks to get fully organised, we hope this is the end of pre-presentation worries!

A big thanks to the Big Lottery Fund, and to Jo for co-ordinating our application.

This roundup has a focus on oceanography, physical and chemical processes in the worlds oceans. The chemistry and biology of natural seawaters are very tightly linked, with most reactions being biologically mediated. The physical side, however, dominates what chemical species marine biology has to work with, an interaction that scientists are now claiming to be able to model. Many marine systems are rather less than ‘natural’, with a range of human influences. In the oceanography section we look at the underlying science of these man-made changes, whilst in our pollution section we look at the dirty stuff…

We finish on a few general papers that don’t fit into the two main themes for the week – living underwater, mapping the salmon genome, dolphins and ichthyosaurs. Finally, if you can only conserve one thing, what would it be? – This is the root of a difficult question facing coral reef conservators. Do you concentrate on the core of the reef? – science is starting to show that the fringes of the reef (an other eco-systems?) are more genetically diverse, and may offer a stronger pool of organisms better able to survive ongoing climatic change…
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The Marine ID course on Wednesday 9th June looked at two of the most commonly found animals in the sea – starfish and the anemones, or to get more technical, echinoderms and cnidaria. The talks looked at the characteristic features of the two groups, and were beautifully illustrated with photographs of many different species, mostly taken by the speakers in UK waters. Thanks to Gordon and Ron for a couple of excellent presentations!

Lots of interesting articles over the last week, some physiology – how sharks and seals find their food, and how far can crocodiles migrate? Prehaps my favourite was the article on classifying arrow-worms, a group I knew nothing about them before the article. There is also a nice set of maps of North Americal marine ecosystems, which you can view on Google Earth. Maps almost had a separate section this week, with 3D maps of the oil-spill being computed by the University of Texas at Austin. Unfortunately the article was so uninformative that I couldn’t see any point in referencing it…
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Conditions for the dive at Roa Island on Saturday 5th. June were almost perfect, bright sun.little wind, calm and undisturbed water which gave underwater visibility  in excess of  3 metres.

Swimming approx. SW from the jetty towards the middle of the channel, initially over  a sea bed of cobbles covered with tube worms, common winkles and dog whelks with numerous clumps of dog whelk eggs.  At about 4 metres deep the bed changed to small boulders with a dense  covering of  various seaweeds which included sea lettuce and  bootlace weed.  continuing downward at minus 6 metres the weed  disappeared  to be replaced on the boulders by a number of species of sponge. Between the boulders were many varied and different animals including peacock worms, anemones, and various species of crab.  After a short distance the sea bed changed again to  pebbles with hard mud patches, this continued to max. depth of dive at 10.3 metres. There was still lots of life to see on this gentle slope, including hermit crabs, whelks, anemones and the greater pipe fish. The pipe fish were quite common at all depths through-out the dive. On this deeper part of the dive there were many common starfish, a large number with parts of arms missing.  They had not been shed, more like cut or torn off, the detached parts were also strewn over the sea bed. All in all an excellent and very interesting dive.

This week’s science news is a mixed bag – so I’ve not tried to pull out articles by theme. Many of the articles have a strong central thread of common sense running through them, however! If the amount of fresh water entering the Baltic is reduced, the Baltic will become saltier, dispersing an oil-slick is not the same as making it disappear…
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In early April the British Government declared the Chagos islands and the seas surrounding them as a  marine protected area, MPA. It also includes a no-take marine reserve where commercial fishing will be completely banned.  The new MPA is the world’s largest, and it will double the global coverage of the world’s oceans under protection.

Professor Charles Sheppard of Warwick University has spent many years undertaking scientific research and campaigning for protection for the Chagos. In an interview  Professor Sheppard outlines the importance of the Chagos itself  and the much wider influence it can have on the Indian Ocean as a whole.

Listen to this interview