The orange mat that resembles fish eggs
No interactions present.
There are 2 similar species, Cryptosula pallasiana (again shown in magnifcn at Aphotomarine &/or Google images, where the darker operculi (ie holes) are smaller in relation to the zooids than in Oshurkovia, & Escharoides coccinea shown at http://www.marlin.ac.uk/speciesinformation.php?speciesID=3286 where the "Individual zooids quadrangular in shape" & "separated from each other by a deep groove" give the colony a gridlike structure
Lat/Lng: 51.7031, -5.15
OS grid ref: SM824051