浜辺
barricade
block shape
boulder rock
breakwater
built structure
coast
coastal feature
construction
construction barrier
construction industry
copy space
copyspace
dam
defending
defense
dike
embankment
flood
groyne
heavy
levee
outdoors
protection
retaining wall
rock
safe
safety
sea
sea storms
sky
solid
stone material
storm
strength
structure
surrounding wall
water
waters edge
wave