- Cephalopods: Characteristics, History, and Unusual Features
- Squid: Characteristics, History, Reproduction
- Squid Species: Firefly, Bigfin, Jumbo and Vampire Squids
- Squid That People Eat: Species, Snacks and Fishing
- Giant Squids: Characteristics, Size, Stories, Videos
- Colossal Squids: Characteristics, Feeding and Size
- Cuttlefish: Characteristics, Behavior and Colors
- Cuttlefish Species
- Octopus Characteristics, History and Human Food
- Octopus Feeding, Mating and Development
- Octopuses Behavior: Sleep, Fighting, Personalities
- Octopus Intelligence: Problem Solving, Play, Prey, Predators and Consciousness
- Octopus Species: Big, Small, Ordinary and Unusual Ones
- Blue-Ring Octopuses and Venomous Octopuses
- Giant Pacific Octopus: Characteristics, Feeding and Reproduction
- Reef Octopuses: Characteristics, Behavior, Mating
- Nautiluses: Characteristics, Shells and Species
