Helmut Debelius

• Red Sea Reef Guide
• Asia Pacific reef guide
• Marine atlas
• Nudibranchs and sea snails
• Armoured Knights of the Sea
• Crustacea Guide Of The World
• Fish Guide Indo-Pacific
• Indian Ocean
• Mediterranean and Atlantic Fish Guide
• Mediterranean And Atlantic Invertebrate Guide
• Méditerranée atlantique
• Nudibranchs Of The World