A Port Jackson shark was caught in action on July 2, as it dived face first into a buffet of giant spider crabs on the Mornington Peninsula of Australia.Video by marine biologist Sheree Marris shows the predator feasting on crustaceans.Marris told Storyful that she had never seen this behavior before and said that it was, “an exciting event to witness … not so exciting for the poor crab that became dinner.”With grooves for crushing crustaceans instead of sharp teeth, Port Jackson sharks are harmless to humans, but alas not so harmless to crabs. Credit: Sheree Marris via Storyful