marine biology Archive

  • How Healthy are Mediterranean Rocky Reefs?

    How Healthy are Mediterranean Rocky Reefs?

    Intense exploitation over millennia has depleted Mediterranean Sea species from the large to the small. What would a ‘healthy’ Mediterranean rocky bottom look like? There are no pristine sites (i.e. undisturbed by humans) left in the Mediterranean against which to compare the health of current ecosystems. SCUBA divers surveyed the rocky reefs throughout the Med, from Morocco to Turkey.

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  • Coral reef fish ‘help protect jobs’

    Coral reef fish ‘help protect jobs’

    Jobs, ecotourism and diving industries can benefit from having a diverse supply of weed-eating fish on the world’s coral reefs, scientists say. Despite their small size, relative to the sharks and whales that often get more attention, herbivorous fish play a vital role in maintaining the health of coral reefs, which support the livelihoods of 500 million people worldwide, according to a study published this month in the journal Ecology.

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  • Corals in trouble by middle of this century

    Corals in trouble by middle of this century

    Nearly one-third of CO2 emissions due to human activities enters the world's oceans, making them less alkaline and affecting calcification of corals. By the middle of the century, corals at the Northern edges of the tropics will be in trouble with the Hawaiian island reefs will be among the first to feel the impact.

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  • Creature of the Month: Yellow Saddle Goatfish Work Together

    Creature of the Month: Yellow Saddle Goatfish Work Together

    Yellow saddle goatfish are a common site on the reefs of the Red Sea. A team of scientists from Switzerland though have discovered that these fish exibit very unusual behaviour: they work together to catch their dinner. The researchers claim that similar co-operation has only been identified in a handful of species – primarily mammals [...]

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  • Live fast and die young: same-sex sexual behaviour in a deep-sea squid

    Live fast and die young: same-sex sexual behaviour in a deep-sea squid

    In a study published today in Biology Letters, male squid were found to routinely and indiscriminately mate with both males and females.

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  • Soft Coral is Reef Building

    Soft Coral is Reef Building

    Scientists have long believed soft corals, one of the many endangered elements of marine life, are only minor contributors to the structure of coral reefs. But that’s not true, says new research from Tel Aviv University. A new in-depth analysis of reefs in the South China Sea has revealed that massive parts of the reefs [...]

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  • Mapping Coral Disease Clusters in the Caribbean

    Mapping Coral Disease Clusters in the Caribbean

    In the last 30 years, more than 90 percent of the reef-building coral in the Caribbean has disappeared because of a disease of unknown origin. Now, scientists from the University of Florida have used a GIS (geographic information system) to show the whereabouts of the clusters of diseased coral. Their findings, published in the journal [...]

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  • Scientists Warn of Unprecidented Marine Exctinctions

    Scientists Warn of Unprecidented Marine Exctinctions

    We knew it was bad, but it is even worse than we thought. World rushing heedlessly towards global marine extinctions.

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  • Jellyfish blooms move food energy from fish to bacteria

    Jellyfish blooms move food energy from fish to bacteria

    Over the last few years reports of jellyfish blooms around the world have been increasing. This is bad news for the marine food web, as the jellyfish are voracious predators of plankton, but are not readily consumed by other predators. New study shows that jellyfish shunt food energy from fish toward bacteria.

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  • How Life on the Surface affects Life on the Seafloor

    How Life on the Surface affects Life on the Seafloor

    Analysis of a comprehensive database has revealed strong links between biological productivity in the surface oceans and patterns of biomass and abundance at the seafloor, helping to explain large regional differences. The vast majority of the biological production in the world’s oceans occurs within sunlit surface waters – the “photic zone“. Through the process of [...]

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