© 2025 KNAU Arizona Public Radio
Arizona Public Radio | Your Source for NPR News
Donate
Play Live Radio
Next Up:
0:00
0:00
0:00 0:00
Available On Air Stations
KNAG 90.3 FM Grand Canyon is temporarily off air due to suspected antenna damage. We are working with contractors to identify and fix the problem.

Arizona Public Radio continues to integrate new audio software while addressing remaining glitches. We appreciate your patience and support and will update when all issues are fully resolved.

Gel May Provide Clue to Sharks' Nose for Prey

By Joe Palca
Published January 28, 2003 at 10:00 PM MST

A gel inside the snouts of great white sharks generates an electrical current when exposed to different temperatures. Some fish congregate in water of a specific temperature, and the gel could be a reason sharks are good at finding their meals. NPR's Joe Palca reports.

Copyright 2003 NPR
Joe Palca
Joe Palca is a science correspondent for NPR. Since joining NPR in 1992, Palca has covered a range of science topics — everything from biomedical research to astronomy. He is currently focused on the eponymous series, "Joe's Big Idea." Stories in the series explore the minds and motivations of scientists and inventors. Palca is also the founder of NPR Scicommers – A science communication collective.
See stories by Joe Palca