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Ecology

They can stop the world's biggest warships, cripple power stations and kill humans with a single sting but jellyfish are not about to take over the world and turn our oceans to slime, as some reports have claimed.

Little is known about Arctic killer whale prey preference or behavior, but new research has tried to determine the diet of the Arctic killer whale. It seems to prefer other whales over fish.

Australian scientists have discovered that some tropical fish have a greater capacity to cope with rising sea temperatures than previously thought – by adjusting over several generations.

The hybrid shark is a combination of Australian black-tip shark and its global counterpart, the common black-tip

Research involving a mollusk known as a California sea hare has contributed to the understanding of learning and memory.

Picks from the archives...

X-Ray Mag #24 - Jul 2008
X-Ray Mag #03 - Feb 2005
X-Ray Mag #19 - Oct 2007
X-Ray Mag #45 - Nov 2011

Squids, octopus and cuttlefish (who all belong to the phylum of molluscs) are among the most intelligent animals in the sea, and definitely the most intelligent marine invertebrates. We should in...

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Scientists sound an alarm that expanding ocean dead zones are shrinking the habitat for high value fish such as marlins in the tropical northeast Atlantic Ocean

Oceanic Sunfish

Photographer Ian Osterloh encountered one of the ocean's most remarkable creatures on the NSW south coast this month.

LIttle is known about the early life stage of the ecologically and socio-economically important fish

The Great Barrier Reef’s future may depend on subzero temperatures.

Cayman Island's ban on fishing grouper has has been extended for a further eight years giving the endangered fish an opportunity to continue their recovery.

Scientists recently discovered and described three "previously unknown species" of carnivorous sponges in the deep waters off New Zealand and Macquarie Island

Coral reef successfully restored after 2002 boat grounding in Florida Keys.

Florida State University marine biologists are collecting new data on the once severely overfished Atlantic goliath grouper, a native species that is now making a comeback

Australian scientists have urged greater consideration for the brilliantly-hued parrot fishes that tend and renew the world’s imperilled coral reefs.

Found near methane seeps, crab "farms" released fluid to derive energy for bacteria growing on its appendanges.

Poaching accounts for the loss of up to 60% red coral biomass in the Medes Islands Marine Reserve of the Mediterranean coast of Spain.

Humpback Grouper or Panther Grouper (Chromileptes altivelis)

Three non-native fish species — a panther grouper, spotted scat and yellow tang —have been spotted in Florida waters again this past year after not being seen for as many as 19 years.

Coral reefs can both positively and negatively influence the acidity of their surrounding seawater.

The IUCN Red List shows that tunas and sharks are particularly in danger. Additionally other marine plants and animals also face danger in changes to their habitats, including 14 % of sea grasses...

The lionfish invasion of the Caribbean has spurred scientists from the US, UK and Australia to look for ways in controlling or diminishing the threat. The lionfish venomous spines don’t make it...

During the time period 1945– 2009 a total number of 165 marine alien species were recorded along Italian coasts according to a report. In many cases these were native in the tropical regions of...

A bright blue prawn and a blenny with a black face are recorded further west than ever before in Great Britain.

Scientists indicate that the invasion of the lionfish will be permanent. Entirely eradication of the unwelcome guest will be very difficult. Until a possible solution is found the lionfish pose a...

The ability of marine reserves to replenish fish stocks have been studied extensively, but evidence of their ability to benefit shallow-water communities to thrive have remained a mystery until...

Bird's nest coral (Seriatopora hystrix) is common throughout the Indo-Pacific and is able to live across a range of depths. However, there is little gene flow between the coral populations at each...

Census of Marine Life Publishes Historic Roll Call of Species in 25 Key Ocean Areas

What do you do when you have collected more than 5,000 specimens and then have to identify them?

In a study began two years ago, Auckland University researcher Shahriman Ghazali started listening to recordings taken by colleagues studying ambient noise in the Leigh marine reserve north of...

The Coral Reef Targeted Research (CRTR) Program has recently released a new Reef Rehabilitation Manual.