Okinawan waters are home to a number of hazardous marine organisms, including:

Poisonous

• Sea snakes
• Cone shells
• Blue-ringed octopus
• Stonefish
• Lionfish
• Scorpionfish
• Sea Urchins

Otherwise hazardous

• Surgeon fish
• Sharks, including:
  • Hammerhead shark
  • Great White Shark