the groin

alga building cliff clouds coast courseway crab crags current death defence derelict dock drive drown erosion fish fishing flow geology grass groin grounded high history interesting island kelp landmark lido lifering light lighthouse limpet lobster manmade marys moss nature pebble pier pool prevent promenade railings ripples river rock rockpool rollers safety saint seals seaweed ship sink stone sunk sunrise sunset surf tidal tide timber tynemouth unused walk water waves weather wildlife wood wreck