Video transects of Cold-water corals

Researcher John Appah has been working on short videos from ROV video transects of approximately 9km at depths of up to 1070 metres in the Porcupine Bank Canyon as part of his project.

The live Cold-water corals (CWC’s) in these videos occur around depths of 600-800 metres and are predominantly Lophelia Pertusa and Madrepora Oculata. But other organisms such as Paramuricea sp, Leiopathes sp and sponges are also present. 

John extracts images from the ROV videos and estimate abundance of the different coral species and their associated species by overlying a grid on the images. He also collects water samples and hydrographic variables in the vicinity of the corals to determine the influences on distribution of the corals.

Keep following our website for more updates on what John is discovering!

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