Tag: marine

Most fish in the sea evolved in freshwater

Most fish in the sea evolved in freshwater

by | Feb 8, 2012 | , , | 0

Family histories don’t come much more bizarre. Three-quarters of the fish in the sea can trace their origins back to a freshwater ancestor. The finding highlights how important rivers and lakes are as a source of new species, just as that supply is under threat from disappearing freshwater habitats. Image: mattk1979

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Marine burglar alarm squawks at the sound of bubbles

Marine burglar alarm squawks at the sound of bubbles

by | Jul 30, 2008 | , | 0

An estimated 1 million ancient shipwrecks litter the seafloor around the globe, proving a tempting target for looters and a nightmare for archaeologists and governments to protect. But that could be set to change with the advent of a submarine alarm that can identify the telltale sounds of approaching treasure hunters in the hubbub of the oceans. Image: piddy77

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