Cardinal Click Beetle vs common Atlantic octopus

Ampedus cardinalis compared with Octopus vulgaris

Key Differences

• Cardinal Click Beetle is Critically Endangered while common Atlantic octopus is Not Evaluated.

Taxonomic Classification

Rank	Cardinal Click Beetle	common Atlantic octopus
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum	Arthropoda (Arthropods)	Mollusca (Mollusks)
Class	Insecta (Insects)	Cephalopoda (Cephalopods)
Order	Coleoptera (Beetles)	Octopoda (Octopuses)
Family	Elateridae	Octopodidae (Common Octopuses)
Genus	Ampedus	Octopus (Octopuses)
Species	Ampedus cardinalis	Octopus vulgaris

Evolutionary Relationship

Cardinal Click Beetle and common Atlantic octopus share a common ancestor at the Kingdom level: Animalia. (Animals)

Conservation Status

Cardinal Click Beetle

CR — Critically Endangered

common Atlantic octopus

NE — Not Evaluated

Trend: Stable →

Physical Characteristics

Attribute	Cardinal Click Beetle	common Atlantic octopus
Diet	—	Carnivore
Average Lifespan	—	2 years
Average Length	—	60 cm
Average Weight	—	5.0 kg

Habitat & Geographic Range

Cardinal Click Beetle

Habitat

Inhabits temperate coniferous forests within the Palearctic biogeographic realm.

Range

Distributed across Denmark, Norway, Sweden, and Switzerland. Currently classified as Critically Endangered on the IUCN Red List, this species faces significant conservation challenges across its range.

common Atlantic octopus

Habitat

Typically found in diverse ecosystems where prey species are available.

Range

Distributed across Chile, Denmark, Norway, Portugal, and Sweden.

Cardinal Click Beetle

The Cardinal Click Beetle (Ampedus cardinalis) is a species in the genus Ampedus. It is currently classified as Critically Endangered (CR) on the IUCN Red List. Inhabits temperate coniferous forests within the Palearctic biogeographic realm.

common Atlantic octopus

One of the most studied invertebrates in neuroscience and behavioral biology, common octopuses inhabit rocky reefs and seafloors in tropical and temperate coastal waters globally. Highly intelligent with distributed nervous systems — two-thirds of their 500 million neurons reside in their arms — they demonstrate tool use, problem-solving, and individual personalities. Masters of camouflage, they change skin color and texture in milliseconds. They have three hearts, blue copper-based blood, and extremely short lifespans of 1–2 years.

Shared Countries

Both species can be found in 3 countries:

🇩🇰 Denmark 🇳🇴 Norway 🇸🇪 Sweden