Squids

A dead squid hooked up to an iPod shows how these cephalopods change color.

Specialized skin structures cycle through rainbow of colors.

Some deep-sea squid can sacrifice their glowing arms to distract enemies and swim to safety.

Long sex sessions leave dumpling squid vulnerable to predators.

Giant and colossal squid may have evolved to see big predators at long distances in dim light.

These often ill-tempered creatures can swim around a mile beneath the ocean's surface.

Large Humboldt Squid were driven to new feeding grounds by El Niño.

From giant squid to little squidlets, here's a look at amazing aquatic life.

The male deep-sea squid O. deletron seems as likely to mate with another male as a female.

Researchers explain why sneaky, small males have larger sperm than their competitors.