Caribbean coral reefs could vanish in 20 years

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

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

Sea cucumbers `may hold key to looking young`

Sea cucumbers and sea urchins could hold the key to maintaining a youthful appearance, researchers say.

Sea urchins see with their body - minus eyes

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

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