浜辺
aid
assistance
bottle
brown
castaway
coast
coastline
communication
concept
conceptual
correspondence
day
document
glass
help
hope
idea
island
land
letter
mail
message
nature
nobody
note
object
ocean
outdoors
paper
rescue
sand
sea
seashore
seaside
send
shore
solitude
sos
strand
summer
sunlight
sunny
survival
survivor
symbol
transparent
tropical
water