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Latest Mark Perry Stories

2007-12-27 09:10:55

Artificial reefs made of everything from oil rigs to subway cars to concrete rubble are sunk these days to the ocean floor to provide homes for marine life. But are they actually helpful? Although such reefs have at times done more harm than good, scientists explained artificial reefs are getting better and better. The deliberate creation of artificial reefs goes back to at least the 17th century in Japan, where fisherman built reefs with oyster shells to attract fish....


Word of the Day
call-note
  • The call or cry of a bird or other animal to its mate or its young.
'Call-note' is newer than 'bird-call,' which originally referred to 'an instrument for imitating the note of birds' but now also refers to 'the song or cry of a bird.'
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