The placement creates a longer delay between the time the left and right nostrils receive an odor than in sharks with pointed noses.

VOA: special.2010.08.03

Hammerhead sharks have nostrils that are more widely spaced than those of sharks with pointed noses.

VOA: special.2010.08.03

The scientists placed special equipment on the sharks to direct odors directly to their nostrils.

VOA: special.2010.08.03

But scientists now can show that differences between the time when a shark's nostrils receive smells is more important than the strength of the odors.

VOA: special.2010.08.03

They had their eyes - and nostrils - wide open.

VOA: standard.2010.07.30