beach coast coastline color colored colors colour coloured colours layers levels ocean pebbles rocks rocky rough sand sea seashore seaside shade shadows shapes shore shoreline Sizes stones stony sunlight sunshine variety water Bird watchers bird watching birders cliffs Cornish cornwall discovered England english find found Great Britain hobby natural nature observe ornithologists ornithology pastime people point study tide waves bank big canada canadian conifer dusk enormous evening giant hillside horizon huge inlet lake landscape large light shadow shine silhouette sky sound three tree trio vancouver vast view waterway bird boulder chalk chalk cliff coastal crumble crumbling crumbling cliff crumbling coast danger disintegrate disintegrating Disintegration erode eroding erosion fall gull insecure rock seabird seagull unsafe wave