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This common lionfish (Pterois volitans) was sighted more than 200km further south than expected down the NSW coast by 14-year-old scuba diver Georgia Poyner. It’s one of almost 40 verified observations she has submitted to Redmap. Redmap/Georgia Poyner

How you can help scientists track how marine life reacts to climate change

We know the warming seas are forcing some marine life to new waters, but we don't know much about how fast and how far they are moving. But now you can help scientists find the answers with Redmap.
The Great Southern Reef is unique, beautiful and contributes significantly to Australia’s culture and economy. However, few of us realise the magnitude and value of this gem right at our doorstep. T. Wernberg 2002

Australia’s ‘other’ reef is worth more than $10 billion a year - but have you heard of it?

The Great Southern Reef covers 71,000 square km and contributes more than A$10 billion to Australia's economy each year.
The tropical orange blotch surgeon fish has been moving south into New South Wales. Graham Edgar / Reef Life Survey

Following Nemo: marine life is heading south

As warmer seas move further south, tropical wildlife is going with them, giving us a dramatic insight into how global warming is changing our oceans.
A great white shark captured off the coast of Mexico. Flickr/Brook Ward

No bones about it: sharks evolved cartilage for a reason

We used to think of sharks as primitive fish because the had cartilage instead of bones. Turns out there was a good reason why and it makes them anything but primitive.
Coral reefs and associated fisheries are of vital social, cultural and economic importance. Noah Pomeroy

Measuring coral reef fishes by taking humans out of the picture

Scuba-diving scientists devise method for gauging the health of coral reefs – a vital ecosystem for keeping fisheries sustainable for people.
Coral reefs are like an underwater metropolis – and function in similar ways. Simon Gingins

It’s survival of the most useful when protecting species

Consensus is growing that we are steering towards a sixth mass extinction event. There are calls for increased efforts to stop the accelerating loss of plants and animals. But do we really need to protect…
Trawling for fish? You might be setting yourself up for a paltry haul next time. Glenn Perrigo

Frequent trawling leads to skinnier fish

Trawling – dragging heavy gear over ocean bottoms in search of fish near the sea floor – is arguably one of the most destructive human practices. Removing fish from the sea for an ever-hungry, growing…
About 18% of the world’s seagrass stocks have disappeared over 20 years. Richard Unsworth

For the love of cod, let’s save our disappearing seagrass

Seagrass is one of the most important coastal habitats where young ocean-going fish such as Atlantic cod can grow and develop before setting out on the journey of life. But these critically important habitats…

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