
Science
- Volume 380
- Issue 6645
- 12 May 2023

COVER Scalloped hammerhead sharks (Sphyrna lewini) form daytime schools near the ocean’s surface and, at night, dive into cold, deep waters to hunt deep-sea prey. They keep warm while deep diving by closing their gills—effectively holding their breath. This foraging strategy is similar to strategies used by deep-diving marine mammals. See pages 583 and 651.
Photo: Brandon Cole
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