underwater
aquatic
backdrop
boulders
coastal
deep
ecosystem
environment
erosion
features
firm
formation
formations
geological
geology
horizon
immersed
imposing
jutting
lake
landmark
landscape
large
life
marine
massive
nature
ocean
out
plants
prominent
protruding
river
rocks
rocky
scenery
sea
seascape
sedimentary
shore
shoreline
size
solid
sturdy
submerged
surface
visible
water
waves
weathering