SPECIES

Greater blue-ringed octopus

Hapalochlaena lunulata Pending authority citation

Electric-blue rings appear on a tiny reef octopus as an unmistakable warning.

Greater blue-ringed octopus (Hapalochlaena lunulata) in its natural environment
Photo (c) desertnaturalist, some rights reserved (CC BY) · CC BY 4.0

The vivid rings may become more visible during disturbance; it otherwise relies on camouflage.

It hunts small crustaceans in crevices and reef environments.

Shallow tropical waters of the western Pacific and Indian oceans.

Where does a greater blue-ringed octopus live?

Shallow tropical waters of the western Pacific and…

Worth knowing

  • Adaptation The vivid rings may become more visible during disturbance; it otherwise relies on camouflage.
  • Ecological role It hunts small crustaceans in crevices and reef environments.
  • Home Shallow tropical waters of the western Pacific and Indian oceans.

How it survives

The vivid rings may become more visible during disturbance; it otherwise relies on camouflage.

Electric-blue rings appear on a tiny reef octopus as an unmistakable warning.

Why relationships matter

It hunts small crustaceans in crevices and reef environments.

Where it lives

Shallow tropical waters of the western Pacific and Indian oceans.

Pressures and responses

Local habitat damage and unsafe wildlife interactions.

Protect reefs and keep a respectful distance from wild marine animals.

Sources

  1. University of Michigan Animal Diversity Web — Hapalochlaena lunulata
  2. GBIF — Hapalochlaena lunulata accepted taxon
  3. Western Australian Museum — Greater blue-ringed octopus
  4. ScienceDirect 2024 — Biology and ecology of Hapalochlaena lunulata

Records of where it has been seen come live from GBIF; observed interactions from GloBI. Draft — not yet reviewed by a person.