Helen Scales

Marine biologist and science writer

Recent articles by Helen Scales

How do octopuses move their limbs if they have no bones? © Getty Images

How do octopuses move their limbs if they have no bones?

How we can save the oceans, and how they can save us © Alamy, Getty Images

How we can save the oceans, and how they can save us

Do fish feel pain? © Getty Images

Do fish feel pain?

How do fish know who they are? © Dan Bright

How do fish know who they are?

Getty © What's the difference between a shoal, a school and a pod?

What’s the difference between a shoal, a school and a pod?

Gotta scan 'em all: 9 other-worldly CT scans of fish © Adam Summers

Gotta scan 'em all 9 other-worldly CT scans of fish

The Plastic Age © Alamy

The Plastic Age

How safe are our Marine Protected Areas? (A marine debris team collects fishing nets that have been abandoned in the Papahānaumokuākea Marine National Monument © NOAA)

How safe are our Marine Protected Areas?

Can marine animals get the bends? © Getty Images

Can marine animals get the bends?

Why does an octopus have more than one heart? © Getty Images

Why does an octopus have more than one heart?

How does ocean acidification impact marine life? © Getty Images

How does ocean acidification impact marine life?

Why isn't thorium used for nuclear power? © Getty Images

Future Technology

Why isn’t thorium used for nuclear power?

Are fish in a shoal all the same age? © Getty Images

Are fish in a shoal all the same age?

How the RI Christmas Lectures changed science for kids © RI/Keystone

How the Ri Christmas Lectures changed science for kids

How do schools of fish swim in perfect unison? © Getty Images

How do schools of fish swim in perfect unison?