Marine Biologist
Marine Biologist: Dr Iain Staniland
A-Levels: Biology, Maths, Chemistry
Marine biologists study organisms in the world's oceans, ranging in size and complexity from viruses to whales. They examine how these organisms interact with the environment and with each other, and measure the effects of human activities and environmental changes on marine ecosystems."

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Dr Staniland talks about his experiences as a marine biologist (this 10.1 MB video runs for 2 minutes and 32 seconds. Closed captions are available).