#1 The Blue Whale
The blue whale that can be up to 30 meters in length, 180 metric tons or more in weight and about the size of an average Asian Elephant is the largest known animal to have ever existed.
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#2 The Whale Shark
The whale shark which can be up to 14 meter (46 ft) long and 30 metric tons (66,000 lb) is known as a slow-moving and the largest extant fish species.
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The fastest fish in the ocean, which can reach speeds of 68 miles (110 kilometers) per hour, grow to more than 10 feet (3 meters) and weigh up to 220 pounds (100 kilograms), is known as Sailfish.
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Stingrays which can survive 15 to 25 years, reach Up to 6.5 ft (2 m) and 790 lbs (350 kg) are commonly found in the shallow coastal waters of temperate seas.
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#5 Tiger Shark
The tiger shark having a reputation as an indiscriminate eater that will swallow anything it finds can reach up to14 ft (4.25 m) and 1,400 lbs (to 635 kg) with a life span of up to 50 years.
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#6 Electric Eel
Electric Eel which can generate an electrical charge of up to 600 volts in order to stun prey and keep predators at bay can be up to 8 ft (2.5 m) long and 44 lbs (20 kg) in weight with a 15 years’ of life span.
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#7 Great White Shark
Great whites which are the largest predatory fish on Earth can grow to an average of 15 feet (4.6 meters) in length, though specimens exceeding 20 feet (6 meters) and up to 5,000 pounds (2,268 kilograms).
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#8 Hammerhead Shark
The great hammerhead which is the largest of the nine identified species of this shark can grow up to 20 feet (6 meters) in length and weigh up to 1,000 pounds (450 kg).
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#9 Mola (Sunfish)
The mola are the heaviest of all the bony fish, having an average life span of Up to 10 years with large specimens reaching 14 feet (4.2 meters) vertically and 10 feet (3.1 meters) horizontally and weighing nearly 5,000 pounds (2,268 kilograms) .
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#10 Atlantic Bluefin Tuna
The Atlantic bluefin tuna which can grow to a whopping 6.5 feet (2 meters) in length and 550 pounds (250 kilograms) is one of the largest, fastest, and most gorgeously colored of all the world’s fishes.
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#11 Blue Marlin
The strikingly beautiful blue marlin is the largest of the Atlantic marlins and one of the biggest fish in the world which are significantly larger than males, can reach 14 feet (4.3 meters) in length and weigh more than 1,985 pounds (900 kilograms) with Up to 27 years’ of life span.
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