The first-ever detailed study of the diets of great white sharks off the east Australian coast reveals this apex predator spends more time feeding close to the seabed than expected.

Scientists have understood quite well why so many poisonous or bad-tasting animals have brightly colored bodies—the colors send a message to the predators: "Don't eat me, or you'll get sick and die." These permanent warning signals became textbook examples of 'aposematism,' which is the use of conspicuous signals to warn predators.

Revealing yet another super-power in the skillful squid, scientists have discovered that squid massively edit their own genetic instructions not only within the nucleus of their neurons, but also within the axon—the long, slender neural projections that transmit electrical impulses to other neurons. This is the first time that edits to genetic information have been observed outside of the nucleus of an animal cell.

Reptiles have a brain area previously suspected to play a role in mammalian higher cognitive processes, and establish its role in controlling brain dynamics in sleep.

When cuttlefish know that shrimp—their favourite food—will be available in the evening, they eat fewer crabs during the day. This capacity to make decisions based on future expectations reveals complex cognitive abilities.