Tom Rayner

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A pair of blacktip reef shark neonates (Carcharhinus melanopterus) gently cruise among the roots in the mangrove forest of Surin Archipelago during high tide in Mu Koh Surin national park, Thailand. Shin Arunrugstichai

From sharks in seagrass to manatees in mangroves, we’ve found large marine species in some surprising places

Michael Sievers, Griffith University; Rod Connolly, Griffith University, and Tom Rayner, Griffith University

Far more megafauna species use coastal wetlands than we thought. And it affects the way we need to address the extinction crisis.
Water management in the Murray-Darling may be inadvertently helping the common carp at the expense of native fish. Tom Rayner

Alien fish boom shows difficulty of replenishing Murray‑Darling

Tom Rayner, Charles Darwin University and Richard Kingsford, UNSW

Wetlands and rivers need water – not least in the case of Australia’s biggest river system, the Murray-Darling Basin, which has been the target of an “environmental watering” plan designed to preserve…
The diverse rivers of Northern Australia, flat and expansive, support diverse species and are linked by unregulated Wet season flows. Andrew Campbell

Dam it all? River futures in northern Australia

Tom Rayner, Charles Darwin University

**Northern futures, northern voices: It seems everyone has ideas about how Australia’s north could be better, but most of those ideas come from the south. In this six-part weekly series, developed by the…

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