Rescuers scoured the sea for missing tourists in Asia on Monday and fears of disease grew as emergency services struggled with rotting bodies from a devastating tsunami that killed more than 22,000 people. The disaster spared no one. Western tourists were killed sunbathing on beaches, poor villagers drowned in homes by the sea and fishermen died in flimsy boats. The 21-year-old grandson of Thai King Bhumibol Adulyadej was killed on a jet-ski. "We have a long way to go in collecting bodies," said Thailand's Prime Minister Thaksin Shinawatra, who expected the 839 death toll in his country to go much higher. Sri Lanka was hardest hit by the tsunami -- a wall of water triggered by the world's biggest earthquake in 40 years with a magnitude of 9.0 that erupted off the northern Indonesian coast. Colombo officials said their latest death toll had nearly doubled to 10,029 and 200 foreign tourists were feared dead. "It smells so bad ... The human bodies are mixed in with dead animals like dogs, fish, cats and goats," said Marine Colonel Buyung Lelana, head of an evacuation team in Indonesia's Aceh province on the island of Sumatra. --More 1844 Local Time 1544 GMT