Caught one of today's headlines in Yahoo's 'Stranded divers chase off Komodo dragon on island'. It's actually not a dragon but is the largest living species of lizard, growing to an average length of 2–3 meters and weighing around 70 kilograms.

Indonesia (1991) 50 Rupiah (Coin) - Komodo Dragon

Some divers from Europe came face to face with the giant, carnivorous lizard on Rinca's palm-fringed beach, and fought it off by pelting it with rocks and pieces of wood.

Stranded divers chase off Komodo dragon on island
By ALI KOTARUMALOS, Associated Press Writer

JAKARTA, Indonesia - Scuba divers swept away in strong currents survived 12 hours in shark-infested waters before scrambling onto a remote Indonesian island where they faced yet another threat: a Komodo dragon....... Read the full article here

See Wikipedia's article ' Komodo Dragon