Widely set eyes give hammerhead sharks exceptional binocular vision
The hammerhead shark's head is one of the strangest in the animal world. The flattened hammer, known as a 'cephalofoil', looks plain bizarre on the face of an otherwise streamlined fish, and its purpose is still the subject of debate. Is it an organic metal detector that allows the shark to sweep large swathes of ocean floor with its electricity-detecting ability? Is it a spoiler that provides the shark with extra lift as it swims? All of these theories might be true , but Miche

600th post anniversary open thread
I have now written 600 posts for this blog (give or take a few - I think the "hearing with skin" story was 601). The next lot of 100 posts will start tomorrow but for the moment, a brief interlude and over to you. Say whatever you'd like - about this blog, about science, about journalism, about wildlife, whatever really. E Read the comments on this post...

How our skin helps us to listen
What part of the body do you listen with? The ear is the obvious answer, but it's only part of the story - your skin is also involved. When we listen to someone else speaking, our brain combines the sounds that our ears pick up with the sight of the speaker's lips and face, and subtle changes in air movements over our skin. Only by melding our senses of hearing, vision and touch do we get a full impression of what we're listening to.  When we speak, many of the sounds we make (such as the English "p" or "t") involve small puffs of air. These are known as "aspirations". We can't hear them, but they can greatly affect the sounds we perceive. Fo

Neck-breaking, disembowelling, constricting and fishing - the violent world of raptors
The role of Velociraptor's infamous claw has received much attention from scientists ever since they clicked their way across a movie kitchen. In comparison, the formidable claws of living raptors (birds of prey) have received little attention. Eagles, hawks, falcons an

Attack of the pregnant cannibal fathers
For the pipefish (and their relatives, seahorses and sea dragons), it's the males who get pregnant.  After a male fertilises the female's eggs, he takes them up into a special brood pouch and shelters them until the babies hatch from his pot-bellied stomach several weeks later. He may seem like a shoe-in for the Dad-of-the-year award but this fatherly commitment has a sinister side to it. Not all of the babies he cares for make it out of his stomach alive.