Common Octopus
Octopus vulgaris
Sighting evidence at Sveti Nikola Island, Montenegro

Photo: Susanne Spindler · CC BY-NC-ND
Octopus are abundant in the rocky substrate around Sveti Nikola, excavating dens beneath limestone slabs and leaving characteristic middens of crab shells and bivalves at the entrance. They are highly intelligent, capable of colour-changing camouflage that renders them nearly invisible against algae-covered rock, and are best encountered on night dives when they emerge to hunt actively. Each individual occupies a home range of several square metres which it defends vigorously against rivals.
Evidence at this site
No confirmed records on file at this site
Common Octopus is listed as a curated species here based on historical reports.