beauty

biosphere

blue

boat

calm

canoe

channel

danube

danubian

delta

ecology

ecosystem

environment

floating

forest

green

lake

landscape

lily

lowland

marsh

moorland

natural

nature

outdoor

park

peace

pond

protected

quiet

reflection

reservation

reserve

river

romania

scenery

sea

sedge

ship

sky

spring

summer

swamp

swampy

vegetation

vessel

vibrant

water

wetland

yellow