Blue whales reach up to 110 feet long, feeding on krill. Sperm whales can grow to 60 feet, found in all deep oceans. Humpback whales can reach 89 feet, migrating during winter
Whale shark (Rhincodon typus) is the world's largest fish. 75% of population lives in Indo-Pacific Ocean, 25% in Atlantic. Maximum recorded length is 18.8 metres, some up to 20 metres. Size measurements can be inaccurate due to visual assessments
Whale sharks reach up to 20 metres in length and 20 tonnes in weight. They have distinctive white spots and stripes on a dark blue-grey background. Their mouths can be up to a metre wide with over 3,000 teeth
Largest known extant fish species, reaching up to 12.65 m in length. Has mouth up to 1.5 m wide with 300-350 rows of teeth. Grey body with white belly and unique yellow spots. Skin can be up to 10 cm thick
Dogfish are second largest shark order with 119 species across 7 families. Named after observing them chasing fish in dog-like packs. Have slender bodies, pointed snouts, and rough skin. Males reach 100 cm, females 125 cm in length
Whale shark is a filter-feeding carpet shark, scientifically named Rhincodon typus. Found in warm tropical seas above 70°F (21°C). Can reach up to 62 feet (18 meters) in length. Weighs over 40,000 pounds (18,000 kilograms)