accident

blue

chemical

color

colours

contaminated

contamination

crude

damage

danger

day

dirty

disaster

ecological

ecosystem

environment

environmental

floating

fuel

gasoline

generation

global

horizontal

image

industry

iridescent

liquid

natural

nature

oil

outdoors

pipeline

pollution

power

protection

rainbow

reservoir

sea

sewage

slick

spill

spot

surface

tanker

toxic

underground

waste

water

wildlife