Crude oil is a complex mixture of chemicals, many of which are harmful to wildlife in various ways.
Crude oil does not mix readily with water, and tends to float at the surface. Slicks can be transported over large distances by wind forces and tidal currents.
Released oil changes with time. Volatile constituents progressively evaporate, leaving an increasingly viscous residue. Seawater may become incorporated into the oil to forma brown mousse.
Wave action and microbial degradation are natural processes that can help to dissipate the oil.
University of Wales Swansea School of Biological Sciences Home Page
Authors: Peter Dyrynda, Rob Symberlist
Contact: P.Dyrynda@swansea.ac.uk
Update: 22/1/98