Flapjack Octopus

AT A GLANCECommon Name: Flapjack OctopusScientific Name: Opisthoteuthis californianaCategory: InvertebratesSubcategory: CephalopodsSize: Mantle length: 5–8 in (13–20 cm); Total spread: up to 12 in (30 cm)Weight: 0.8–2.2 lb (350–1,000 g)Lifespan: Estimated 2–3 years in...

Caribbean Reef Squid

OverviewThe Caribbean Reef Squid (Sepioteuthis sepioidea) is an exquisite, highly social, and behaviorally complex cephalopod native to the sunlit, turquoise waters of the Caribbean Sea, the Bahamas, and southern Florida. Belonging to the family Loliginidae, this...

Broadclub Cuttlefish

OverviewThe Broadclub Cuttlefish (Sepia latimanus) is a colossal, highly intelligent, and visually dazzling cephalopod native to the warm, biodiverse coral reefs of the tropical Indo-Pacific and Coral Triangle. Holding status as the second-largest cuttlefish species...

Bigfin Reef Squid

OverviewThe Bigfin Reef Squid (Sepioteuthis lessoniana), also celebrated across coastal Asia as the Oval Squid or Glittering Squid, is one of the most widespread, behaviorally complex, and aesthetically dazzling cephalopods inhabiting the shallow coral reefs of the...

Pharaoh Cuttlefish

OverviewThe Pharaoh Cuttlefish (Sepia pharaonis) is a large, intelligent, and visually spectacular cephalopod native to the warm tropical and subtropical waters of the Indo-Pacific. Attaining mantle lengths of over forty centimeters and weights exceeding five...

Paper Nautilus

OverviewThe Paper Nautilus (Argonauta argo), also known as the Greater Argonaut, is an extraordinary, open-ocean pelagic octopus celebrated since ancient Greek antiquity for its breathtaking beauty and unique reproductive biology. Belonging to the superfamily...

Big Blue Octopus

OverviewThe Big Blue Octopus (Octopus cyanea), also universally celebrated among marine biologists, scuba divers, and underwater photographers as the Day Octopus or Cyane’s Octopus, is a large, extraordinarily intelligent cephalopod belonging to the family...

Blanket Octopus

OverviewThe Blanket Octopus (Tremoctopus violaceus), also known as the Common Blanket Octopus or Violet Blanket Octopus, is an extraordinarily majestic, pelagic cephalopod belonging to the family Tremoctopodidae. Inhabiting the sunlit epipelagic and mesopelagic waters...

European Squid

Overview AT A GLANCE Common Name: European Squid Scientific Name: Loligo vulgaris Category: Invertebrates Subcategory: Cephalopods Size: Mantle length: 30-40 cm (12-16 in); Total length up to 60 cm (24 in) Weight: 0.5-1.5 kg (1.1-3.3 lb) Lifespan: 1-2 years...

Giant Cuttlefish

Overview AT A GLANCE Common Name: Giant Cuttlefish Scientific Name: Sepia apama Category: Invertebrates Subcategory: Cephalopods Size: Mantle length: 45-50 cm (18-20 in); Total length up to 100 cm (39 in) Weight: 8-11 kg (18-24 lb); exceptional specimens reach 12 kg...