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Articles on Hammerhead sharks

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The characteristic hammer-shaped head is just becoming visible in this image of an embryonic bonnethead shark. Scale bar = 1 cm. Steven Byrum and Gareth Fraser, Department of Biology, University of Florida

Rare access to hammerhead shark embryos reveals secrets of its unique head development

Because hammerhead sharks give birth to live young, studying their embryonic development is much more complicated than harvesting some eggs and watching them develop in real time.
A great hammerhead shark’s two eyes can be 3 feet apart on opposite sides of its skull. Ken Kiefer 2/Image Source via Getty Images

Why do hammerhead sharks have hammer-shaped heads?

The first hammerhead shark was likely the result of a genetic deformity. A biologist explains how shark DNA reveals hammerheads’ history.
Scalloped hammerhead entangled in a Queensland shark control net at Magnetic Island, Townsville. Courtesy of Nicole McLachlan

Some sharks have declined by 92% in the past half-century off Queensland’s coast

Some media have reported shark numbers at ‘plague proportions’ in Australian waters. But a new analysis suggests the opposite: species such as hammerheads and white sharks have plummeted in number.

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