A recent study found that sharks visited urban areas due to easy access to food waste, leftover fish from a nearby aquarium being dumped into the ocean, and runoff creating bottom-up food webs.
Octopuses' mastery of camouflage has mystified researchers since the beginning of science itself. Octopuses can shift hues because they have chromatophores — tiny, color-changing organs that are dotted throughout an octopus's skin.
