Ocean Menaces are a major concern for the environment and marine life. Orcas, also known as killer whales, are one of the most dangerous predators in the ocean. They are highly intelligent and social animals that hunt in packs, making them a formidable force in the ocean. Orcas have been known to attack and kill other marine mammals, such as seals, dolphins, and even large whales. They are also known to attack boats and humans, making them a serious threat to ocean safety.