Burnham-on-Sea on the Bristol Channel has tides that can recede 1.5 miles at low tide, it has the second highest tidal range in the world (49 foot drop) around the estuary of the River Parret. There is a specialised hovercraft volunteer rescue service base at Burnham. The sands of the beach runs into sinking mud and quicksands a danger to all.
To aid shipping there is a low wooden pile lighthouse on legs it was built by Joseph Nelson in 1832.
It stands on nine wooden piers, some with plate metal reinforcement. The structure is white washed with a vertical red stripe on the seaward side.(Although I did not risk going out on the sands to see that side of the light)
Across the bay at Burnham on Sea is Hinkley point nuclear Station and this could be included as dangers on the coast ?