Oban dive trip May 2013

May 22nd, 2013

Our latest visit to Oban on the 10th May was wet in every sense of the word – with almost continuous rain, but also some exceptionally good diving. Dives centred on Loch Creran, with the wormery and the inner basin being popular with all of the group.

Following from the talk about surveys in the area on the 8th, we can confirm that there are quite a lot of orange coloured worms (Serpula vermicularis) – these being seen by several divers, and possibly accounting for several percent of the individuals seen. While none were as clearly yellow as the single specimen photo’d back in 2007, this is a pretty strong indication that yellow is at least possible for this species (see gallery).

Less good news on the sea-pen front, however. A dive at Loch Feochan turned out a large number of common sea-pens (Virgularia mirabilis) in very shallow water (3-5m). Amongst these were a large number of juveniles that looked a lot like the specimen photographed at Gallanach over Easter (see gallery). After a discussion with Ron I am forced to concede that there is no current evidence for Funiculina quadrangularis at Gallanach, though Ron has seen this species there on previous occasions… (We’ll have to look again!).

Otherwise a great spectacle was put on by sea-cucumbers, with very large numbers of Psolus to be seen below about 10m in the inner basin of Loch Creran – densities reaching several individuals per square metre. There were some sea cucumbers in the outer basin as well, but in slightly deeper water (ca 18m+). There appears to be at least one other species present – but I’m not sure of its identity (photo in the gallery). Other high spots of the weekend included a thornbacked ray and a couple of dogfish.

Non divers enjoyed the Falls of Lora, and an excellent trip to the Oban Sea Life Centre (where thornbacked rays and dogfish were demanding petting!), but it was a bit damp for cycling or kayaking…

Thanks to Tralee Bay for accommodation and Gordon for organising the trip.

(by Barry 22nd May 2013)

Posted in dive trips, MCS talks