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Caribbean coral reefs could vanish in 20 years

Last Updated: Wednesday, July 02, 2014, 18:12

Many of the Caribbean`s coral reefs could vanish in the next 20 years, according to a new report which found that healthy coral reefs have declined by about 50 per cent in the past four decades.

Modern-day deep-sea animals may have evolved earlier than thought

Last Updated: Thursday, October 11, 2012, 17:32

Present day deep-sea fauna like sea urchins, starfish and sea cucumbers may have evolved earlier than previously believed.

Sea urchins see with their body - minus eyes

Last Updated: Friday, July 01, 2011, 13:48

Sea urchins have several genes that are coded for a widely occurring eye protein, opsin, reports the journal Proceedings of the National Academy of Sciences.

Study finds how sea urchins affect coral reefs’ growth

Last Updated: Saturday, January 15, 2011, 18:43

A study has found that overfished reef systems have more sea urchins—organisms that in turn eat coral algae.