A bottlenose dolphin’s body is sleek and streamlined, allowing it to swim at speeds over 18 miles per hour.
With their size and power, sharks ultimately have an edge over dolphins. Dolphins also have the advantage of speed as they can swim faster than most shark species.
Bottlenose dolphins routinely swim at speeds of 4.6 to 10.2 feet per second (3.14 to 6.95 miles/hour; 5.04 to 11.19 km/hour) with a mean speed of 4.9 to 5.6 f/s (3.34 to 3.82 miles/hour; 5.4 to 6.14 km/hour).
According to the BBC, the muscular black marlin takes the title for World’s Fastest Swimmer. Growing to a whopping 4.65 metres (15 ft) and weighing up to 750kg (1650 lbs), these big fish have clocked speeds of up to 129km/h (80 mph)!
Humans at their peak athleticism can swim at best around 6 mph — Michael Phelps topped out around there in 2010, according to ESPN, and that’s still about three times faster than the average human swimmer. A shortfin mako shark, on other hand, can hit top speeds of about 60 mph.
The orca, or killer whale, is the largest of all dolphin species and shares the distinction of fastest dolphin. He may dwarf the Dall’s porpoise in size, but he keeps pace with his tiny counterpart, swimming at burst speeds of 34.5 miles per hour.
No, dolphins do not eat people. Although the killer whale is called a “killer whale” it actually belongs to the dolphin family. This marine mammal gets its name from its large size (killer whales can grow between 15 – 30 ft. long) and because of its diet.
When in December 1994 two male swimmers, Wilson Reis Pedroso and João Paulo Moreira, were harassing and possibly attempting to restrain Tião, in a beach of Caraguatatuba, the dolphin broke the ribs of Pedroso and killed Moreira, who was later found to be drunk.
Sharks are solitary predators, whereas dolphins travel in groups called pods. Whenever a member of the group is in danger from a shark, the rest of the pod rushes in to defend their buddy. Dolphins have even been known to protect humans in danger of sharks. Apex Prey.
“We do know that dolphins will attack and kill small sharks,” he says, adding that they will also kill other large fish and small porpoises that pose no immediate threat. They don’t usually eat these victims though, and the altercations often happen when the dolphins appear to be socializing.
The body shape of a dolphin helps it swim fast. A dolphin’s body is shaped like a tube that is pointed at both ends. This streamlining helps the water flow over the dolphin’s body as it swims.
Bottlenose dolphins are top ocean predators with few predators of their own, although they sometimes become prey for sharks and orcas. They can also become entangled in fishing gear and are still hunted by humans in some parts of the world.
From the literature, a consensus emerges that there are two groups of mammalian non-swimmers: giraffes and great apes. Giraffes definitely don’t look like natural swimmers. With such extreme anatomy, it seems plausible that they really are unable to float in water.
Top 10 Strongest Animals Dung Beetle. A dung beetle is not only the world’s strongest insect but also the strongest animal on the planet compared to body weight. Rhinoceros Beetle. Rhinoceros Beetles can lift something 850 times their own weight. Leafcutter ant. Gorilla. Eagle. Tiger. Musk Ox. Elephant.
Unlike other fish that use their whole bodies to swim, triggerfish usually get around using only their top and bottom fins. That makes them highly maneuverable—they can swim backwards and forwards, or hover like a UFO.