scubaseason

Octopus

Octopus vulgaris

Sighting evidence at Secca del Cristo, Portofino

Octopus

Photo: Susanne Spindler · CC BY-NC-ND

Common octopuses are abundant in the rocky rubble margins where posidonia meets bare substrate, building dens recognisable by the shells and stones piled at their entrances. They are active hunters of crabs and bivalves, and Portofino's no-take zone has produced individuals of impressive size. Patient divers can observe complex colour-change behaviour and remarkable problem-solving as they navigate the reef.

Evidence at this site

No confirmed records on file at this site

Octopus is listed as a curated species here based on historical reports.

How is this calculated?

Sighting evidence is compiled from iNaturalist observation records within a set proximity radius, filtered for quality-grade observations. “Last confirmed” is the date of the most recent research-grade record. Record count covers a rolling 24-month window. Confidence reflects record count, recency, and consistency of seasonal signal.

Also seen at other sites