Manta ray
With a wingspan reaching up to 7m (23ft), a manta ray is an ocean giant. Found in warm, continental waters across the world, these huge rays propel themselves by flapping their colossal fins like wings.
Hippopotamus
Getting its name from the Greek for ‘river horse’, the hippo is certainly a hefty specimen. Males can reach up to 3.5m (11ft) in length and weigh up to 3,500kg (7,716lb).
Saltwater crocodile
Found skulking in murky estuarine waters of India, southeast Asia and Australia, males of Earth’s largest crocodilian species can often reach up to 7m (30ft) in length, and weigh in at 1,000kg (2,204lb).
Whale shark
As the largest-known extant fish species, the biggest confirmed whale shark clocked in at 12.65m (42ft) in length. The sharks are filter feeders, and…
