Known as 'sharks', these creatures have the top proportions in the animal world. That's how effective swimming helps to lose weight.
The researchers caught a giant white shark weighing more than 453 kg, after it completed a 2,370 km swim from Canada to the Miami coast, USA.
Giant white sharks are seen being extremely aggressive, constantly throwing prey, in the unequal battle.
After the famous Big Jaw movie in the cinemas in 1975, the great white shark became one of the most recognized sharks in the world.
Whale sharks are the largest surviving fish, while 7 mm Paedocypris carp is the smallest in the world.
Arctic terns, leather turtles, dragonflies are three of the animals with the longest migrations in nature.
With terrible biting force of up to 2.6 million kg / m2, African crocodiles are ranked at the top of the list of the most powerful animals in the natural world.