marine biology is a diverse science concerned with all aspects of plant and animal life in the sea. Marine biologists study the distribution, abundance and life histories of animals and plants in the sea and the way in which these are governed by environmental factors.
The eventual aim of marine biology is to understand marine life and to ensure the production of food from the sea at a sustained level. The field of marine biology can be divided into research and technical work:
Researchers study the marine system as a whole or focuses on a particular marine species
Technical marine biologists are more involved in collecting samples, building and testing equipment and analyzing data
Marine biologists are concerned with the effects of pollution on marine life, the effect of introducing commercially important species into the waters, identifying ecologically sensitive areas, and assisting in establishing the ecological effects of projects like the construction of harbours and piers.