Video library

Why Water Striders Make Terrible Lifeguards

With the drought officially over and the summer heat upon us, people all across California are heading outdoors. For many, that means a day on the river or relaxing by the lake. The wet winter means there’s plenty of habitat for one of nature’s most curious creatures. Water striders, also called pond skaters, seem to defy gravity. You’ve probably seen them flittering across the water’s surface, dodging ripples as they patrol streams and quiet backwater eddies.

Scientists like David Hu at Georgia Institute of Technology study how water striders move and how they make their living as predators lurking on the water’s surface. It’s an amazing combination of biology and physics best understood by looking up close. Very close.

Water striders create circular waves when they move. The waves announce the water strider’s presences to their peers. (Josh Cassidy/KQED)

Water striders are insects with six legs. They use the front and back legs to hold themselves up and the middle pair to row. “They’re basically like little rowboats,” said Hu. But unlike the oars of a rowboat, water striders’ legs don’t penetrate the surface of the water. Water striders use their center pair of legs to push against dimples […]

Summary
Title
Why Water Striders Make Terrible Lifeguards
Description

Water striders, AKA pond skaters, seem to defy gravity: flitting across water's surface, dodging ripples as they patrol streams and quiet backwater eddies.

Recent Posts

Scathing report released detailing Navy’s handling of Red Hill fuel spill

The Inspector General of the Department of Defense released some scathing reports Thursday over the…

6 days ago

Growing Food Instead of Grass Lawns in California Front Yards

Photo: Morgan Boone, a volunteer with Crop Swap LA, harvested lettuce at the La Salle…

2 weeks ago

LA River restoration connects us back to ‘the life force of our city’

Los Angeles residents at a section of the Los Angeles River cleanup in Los Angeles,…

3 weeks ago

LAist: New study raises questions about heavy metals in fire retardants

Over the past decade, about 67 million gallons of fire retardant have been dropped on…

3 weeks ago

Meadow and watershed restoration in the Golden Trout Wilderness

Photo: Golden Trout Wilderness Seeking blue, seeing gold The Kern Plateau features a chain of…

3 weeks ago

First sighting of salmon in 100 years marks key milestone for California dam removal

For the first time in more than a century, a salmon was observed swimming through Klamath…

4 weeks ago