Sharks with satellite tags help predict hurricane intensity

Scientists want to know how strong a hurricane might become before it hits land.

Hurricanes get their power from warm water in the ocean.

The warmer the top layer of the ocean, the stronger the hurricane can grow.

So scientists need to know how warm the ocean is in many places.

But measuring the whole ocean is very hard.

Researchers at the University of Delaware had a clever idea: use sharks as ocean helpers.

They attach small devices called tags to the sharks' fins.

The tags measure the water's temperature, saltiness, and depth as the sharks swim.

When a shark comes up to the surface, the tag sends its data to a satellite.

Scientists can then use this information to better predict how strong a coming hurricane might be.