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The old saying there's plenty more fish in the sea might soon no longer apply to the Mediterranean, says Swiss-based International Union for Conservation of Nature. A study it is releasing Tuesday, April 19, 2011 says more than 40 species of marine fish there could soon disappear - almost half the species of sharks and rays and at least 12 species of bony fish are threatened with extinction due to overfishing, pollution and loss of habitat.

Mediterranean landscapes have undergone great change in recent decades, but species have adapted to this, at least in the case of roe deer, Spanish ibex, red deer and wild boar. This has been shown by Spanish researchers who have analysed the effects of changes in land use on the past, present and future distribution of these species.