Why do octopuses change color?

Answer: Camouflage and communication

Temperature regulation system — Wrong. Color change isn't for temperature control. Octopuses regulate temperature through behavior (moving to warmer/cooler water), not skin color.

Camouflage and communication ✓ — Correct! Octopuses have special skin cells called chromatophores (pigment), iridophores (reflective), and leucophores (white). They can change color and texture in milliseconds to blend with surroundings (camouflage), warn predators, or signal other octopuses. It's controlled by muscles and nerves!

Attracting prey to catch — Wrong. Octopuses are ambush predators that hide and wait, not lure prey with colors. Color change helps them hide from both predators and prey.