abstract
attention
background
blue
buoy
calm
caution
coast
color
concept
emergency
float
flotation
guard
health
help
help me
life
life buoy
lifeguard
light
limit
marine
mark
marker
middle
nautical
navigation
ocean
one
orange
protection
range
red
rescue
safe
safety
save
save me
sea
security
sign
signal
single
symbol
travel
warn
warning
water
waves