Ingo Arndt / Green Abalone (Haliotis fulgens) shell interior from Baja California, Collection Meeresmuseum Ozeania, Riedenburg, Germany

Ingo Arndt / Mushroom Coral (Ctenactis echinata) from the Red Sea, Meeresmuseum Ozeania, Riedenburg, Germany

Ingo Arndt / Ramose Murex (Chicoreus ramosus), Meeresmuseum Ozeania, Riedenburg, Germany, sequence 2 of 2

Ingo Arndt / Lesser Valley Coral (Platygyra daedalea) from the Red Sea, Collection Meeresmuseum Ozeania, Riedenburg, Germany

Ingo Arndt / Stony Coral (Acropora sp) from Red Sea, Meeresmuseum Ozeania, Riedenburg, Germany

Ingo Arndt / Mushroom Coral (Fungia sp) from Red Sea, Meeresmuseum Ozeania, Riedenburg, Germany

Ingo Arndt / Stony Coral (Montipora foliosa) from Red Sea, Meeresmuseum Ozeania, Riedenburg, Germany

Ingo Arndt / Knob Coral (Favia favus) from Red Sea, Meeresmuseum Ozeania, Riedenburg, Germany

Ingo Arndt / Regal Thorny Oyster (Spondylus regius), Meeresmuseum Ozeania, Riedenburg, Germany

Ingo Arndt / Sun Carrier Shell (Stellaria solaris) from Australia, Meeresmuseum Ozeania, Riedenburg, Germany

Ingo Arndt / Sun Carrier Shell (Stellaria solaris), Meeresmuseum Ozeania, Riedenburg, Germany

Ingo Arndt / Shin Bone Tibia Shell (Tibia fusus), Meeresmuseum Ozeania, Riedenburg, Germany

Ingo Arndt / Precious Wentletrap (Epitonium scalare), Meeresmuseum Ozeania, Riedenburg, Germany

Ingo Arndt / Pallid Carrier Shell (Xenophora pallidula), Meeresmuseum Ozeania, Riedenburg, Germany

Ingo Arndt / Venus Comb Murex (Murex pecten), Meeresmuseum Ozeania, Riedenburg, Germany

Ingo Arndt / Scallop (Pectinidae), Meeresmuseum Ozeania, Riedenburg, Germany

Ingo Arndt / Thorny Oyster (Spondylus echinatus) from Thailand, Meeresmuseum Ozeania, Riedenburg, Germany

Ingo Arndt / Fluted Giant Clam (Tridacna squamosa), Meeresmuseum Ozeania, Riedenburg, Germany

Ingo Arndt / Regal Thorny Oyster (Spondylus regius), Meeresmuseum Ozeania, Riedenburg, Germany

Ingo Arndt / Fluted Giant Clam (Tridacna squamosa), Meeresmuseum Ozeania, Riedenburg, Germany

Ingo Arndt / Volute Snail (Cymbiola imperialis), Meeresmuseum Ozeania, Riedenburg, Germany

Ingo Arndt / Chambered Nautilus (Nautilus pompilius) cross-section, Meeresmuseum Ozeania, Riedenburg, Germany

Ingo Arndt / Chambered Nautilus (Nautilus pompilius), Meeresmuseum Ozeania, Riedenburg, Germany

Ingo Arndt / Cone Top Shell (Tectus conus) from Indo-Pacific, Meeresmuseum Ozeania, Riedenburg, Germany

Ingo Arndt / Murex Snail (Chicoreus spectrum) from Brazil, Meeresmuseum Ozeania, Riedenburg, Germany

Ingo Arndt / Venus Comb Murex (Murex pecten), Meeresmuseum Ozeania, Riedenburg, Germany

Ingo Arndt / Scorpion Conch (Lambis scorpius), Meeresmuseum Ozeania, Riedenburg, Germany

Ingo Arndt / Blood-spotted Abalone (Haliotis spadicea) shell, Meeresmuseum Ozeania, Riedenburg, Germany

Ingo Arndt / Yoka Star Turban (Guildfordia yoka), Meeresmuseum Ozeania, Riedenburg, Germany

Ingo Arndt / Giant Sundial (Architectonica maxima), Meeresmuseum Ozeania, Riedenburg, Germany

Ingo Arndt / Pallid Carrier Shell (Xenophora pallidula), Meeresmuseum Ozeania, Riedenburg, Germany

Ingo Arndt / Pallid Carrier Shell (Xenophora pallidula), Meeresmuseum Ozeania, Riedenburg, Germany

Ingo Arndt / Pallid Carrier Shell (Xenophora pallidula), Meeresmuseum Ozeania, Riedenburg, Germany

Ingo Arndt / Pallid Carrier Shell (Xenophora pallidula), Meeresmuseum Ozeania, Riedenburg, Germany

Ingo Arndt / Pallid Carrier Shell (Xenophora pallidula), Meeresmuseum Ozeania, Riedenburg, Germany

Ingo Arndt / Horned Helmet (Cassis cornuta), Meeresmuseum Ozeania, Riedenburg, Germany, sequence 1 of 2

Ingo Arndt / Horned Helmet (Cassis cornuta) cross section, Meeresmuseum Ozeania, Riedenburg, Germany, sequence 2 of 2

Ingo Arndt / Ramose Murex (Chicoreus ramosus), Meeresmuseum Ozeania, Riedenburg, Germany, sequence 1 of 2

Ingo Arndt / Shin Bone Tibia Shell (Tibia fusus), Meeresmuseum Ozeania, Riedenburg, Germany

Ingo Arndt / Chambered Nautilus (Nautilus pompilius) cross-section, Meeresmuseum Ozeania, Riedenburg, Germany

Ingo Arndt / Giant Sundial (Architectonica maxima), Meeresmuseum Ozeania, Riedenburg, Germany