flat periwinkle, littorina obtusata. kentallen wall in loch linnhe, scottish west coast

active adventure alba animal animalia appin bay britain coast cold critter critters diving drysuit flat gastropoda great green highlands invertebrate kentallen linnhe littorina littorinidae littorinoidea loch macro marine mollusca muck nature obtusata ocean periwinkle rural scotland scottish scuba sea tourism travel undersea underwater wall water west wilderness wildlife