Dolphins travel in small pods to deter sharks from attacking them, and they avoid predators through the use of echolocation. When attacked, a dolphin's greatest defenses are his maneuverability, powerful tail, nose and teeth.Know More
A dolphin cannot out-swim a shark, but a healthy social animal is not usually at risk for attack. Instead, sharks and other predators target isolated, ill, injured, elderly or infant dolphins. If a dolphin is forced to fight, he may choose to ram his nose into the vulnerable gills or bite down. A group of dolphins works together to defend themselves, but they rarely kill the predator, instead they seek to drive it away.
While most dolphins are too small to battle sharks and are uninterested in initiating fights, a few species such as the killer whale are large and coordinated enough to prey on sharks. Erroneously considered whales, orcas are part of the dolphin family and are named for their size, and their hunting of marine mammals and birds. Orcas hunt in packs, much like wolves, and work to isolate and immobilize their prey. Their echolocation allows them to hunt in dark environments. Both sharks and orcas are considered apex predators. In general, dolphins are carnivores, preferring to hunt and kill crustaceans and fish that cannot fight back.Learn more about Fish
Fish jump in order to move through their habitat, catch flying prey and escape predators. Leaping allows them to travel upstream and avoid obstacles. Fish caught on a hook by fisherman often jump out of the water in an effort to dislodge it. Aquarium fish jump out of their tanks due to fear, to escape dirty water or to amuse themselves.Full Answer >
The hagfish uses slime to protect itself from predators, according to Sea and Sky, an informational website about space and marine life. The slime is made of tiny fibers that make it thick and difficult to remove.Full Answer >
According to Oceana, predators of the parrotfish include grouper fish, sharks and moray eels. Parrotfish are omnivores and generally feed on turf algae, sponges, corals and reef-encrusting animals.Full Answer >
Puffer fish have many attempted predators, but only a few animals, such as tiger sharks and sea snakes, are unaffected by the tetrodotoxin that occurs naturally in most puffer fish. Puffer fish are sometimes eaten by humans as a Japanese delicacy called fugu, but consumption of this dish carries the risk of exposure to tetrodotoxin.Full Answer >