NATURAL HISTORY MUSEUM, LONDON / SCIENCE PHOTO LIBRARY NATURAL HISTORY MUSEUM, LONDON / SCIENCE PHOTO LIBRARY
Beam trawl being emptied on to the deck of HMS Challenger. This equipment was used to collect animals from the sea bed. The voyage of HMS Challenger was a scientific expedition, organised by the Royal Society and paid for by the British government, that spent four years surveying the world's oceans.
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