BBC: Scientists are enlisting sailors and fishermen to help with what they hope will be the world's biggest study of plankton in the oceans.
Plankton are microscopic organisms, key to the marine food chain, but research suggests they are in decline.
Researchers at Plymouth University's Marine Institute want seafarers to help measure the quantity of plankton.
The results will "help us understand how life in the oceans is changing", said project leader, Dr Richard Kirby.
Scientists fear that...