Shark attacks are very rare. While they can attack you, they particularly wouldn’t come after a human just to eat them, unless they were injured and smell the blood in the water. Just remember when you go into the ocean, it’s their territory, so they are curious as to why and what we are doing there. Their main food source is seals, fish and small whales. So, if their food chain is sparse, they might do whatever they had to, to eat.