The following are known Game Genie Codes for SeaQuest DSV on SEGA Genesis.

• Infinite Time In Missions That Use A Timer
  PB1A-BE0Y
• Your Main Ship Will Take No Damage From Enemy Hits
  AJYT-CA4G
  Note: Enemies also take no damage.
• All of Your Extra Ships That You Use For Missions And Mining Will Have Protection From Most Damage
  AKJA-GA38
  Note: Enemies also take no damage.
• Start A New Game With $9000 (Instead of Only $2000)
  FA5T-CGNY
• Start A New Game With $50,000
  LA5T-CHYY
• The Darwin Aqualung Only Costs $1 (It Will Still Show $4000, But You Will Only Get Charged $1)
  AFVA-AAFN
• The Sea Crab Only Costs $1 (It Will Still Show $3000, But You Will Only Get Charged $1)
  AFVA-AAFY
• The Type IV Torpedo Only Costs $1 (It Will Still Show $2000, But You Will Only Get Charged $1)
  AFVA-AAF8