Besides humans, the blue whale's enemies are killer whales and large sharks. Adult blue whales are much larger than any individual killer whale or shark, so these animals tend to attack calves. Few creatures are capable of subduing a healthy adult blue whale, which is the largest creature on earth. Blue whales feed mainly on krill.Know More
Since blue whale calves stay close by their mothers, the strategy of the killer whale pod is to harass the mother and calf until they are exhausted. The killer whales then isolate the calf and prevent it from surfacing to breathe until the calf drowns. However, there have been cases in which adult blue whales have been badly injured by killer whale attacks. The killer whales can chase a blue whale for hours, surround it and even leap onto its back to defeat it. All the while, the members of the pod bite chunks out of the whale to weaken it.
A great white shark might approach a blue whale calf from behind or below to avoid detection. Very large sharks that are13 feet or longer tend to target marine mammals, such as blue whales, because of the nutrition to be had from their blubber.Learn more about Marine Mammals
Bottlenose dolphins are occasionally preyed upon by large sharks and killer whales. They are common members of the family Delphinidae, or oceanic dolphins, and live worldwide in tropical and temperate waters. Two species of bottlenose dolphin exist: the common bottlenose dolphin and the Indo-Pacific bottlenose dolphin.Full Answer >
Killer whales, sharks and false killer whales eat whales. False killer whales and killer whales may hunt whales in packs. Humans are largely considered to be the primary predator of whales.Full Answer >
Although rare, sharks have been known to attack and kill dolphins, while there has also been evidence of killer whales eating dolphins, says the National Aquarium, a website run by Bio Expedition. Since dolphins are on the top of the food chain, few animals are considered as their enemies.Full Answer >
Otters are eaten by large predators, such as great white sharks, killer whales, bears, sea lions, eagles and coyotes, depending on their geographical location. Humans also kill sea otters when they use fishing gear that traps the otter or hit the otter with boats.Full Answer >