Sharks are reduced in size

Oceanographers are raising alarms about the world's largest shark species that are in danger of being reduced in size.

Sharks are now classified as 'vulnerable'. Dr Mark Meekan of the Australian Institute of Marine Animal Sciences said: ' The weakest thing we have noticed is that in the last decade the shark size has dropped from 7m on average to 5m '.

The scientific name of the shark is Rhincodon typus. They have a whale-like diet that filters small animals through their teeth like a comb. It can live up to 150 years and reaches a length of 18 - 20m. The adult age for the birth of a shark is about 30 years old.

NGUYEN SINH