Marine biologist Alex Schnell communicates with an octopus while it hunts for crabs in a National Geographic documentary.

In a National Geographic documentary series "Secrets of the Octopus," an underwater clip shows a marine biologist seemingly communicating with an octopus as it hunts for crabs. The series, produced by James Cameron and narrated by Paul Rudd, follows marine biologist Alex Schnell as she investigates the secret lives of octopuses. The footage, filmed in Australia's Great Barrier Reef, showcases the remarkable intelligence and elusive nature of these creatures.