California two-spot octopuses learned to track prey they could see only as a mirror reflection, then moved toward the actual ...

The effect is known from the smart phone: Sun is reflected by the display and hardly anything can be seen. In contrast to this, the glasswing butterfly hardly reflects any light in spite of its ...

Learn how cleaner wrasse used a mirror and even dropped food to test their reflections, a behavior linked mostly to mammals. A small reef fish may be doing something scientists once thought was ...