The Open-source Camera Trap for Organism Presence and Underwater Surveillance (OCTOPUS)
OCTOPUS is an open-source, motion-activated underwater camera system that can operate for about 72 hours at depths up to 800 feet. It has been used to document cryptic species, including Octopus rubescens, and their ecological interactions.
Octopus Behavior and movements
Motion-activated cameras tracked tagged Octopus rubescens in bottle dens, revealing daytime activity, frequent conspecific interactions, and differences in fish and crab visits between occupied and unoccupied dens.
This study uses DNA metabarcoding of octopus stomach contents to identify prey and compare diets across habitats, revealing how habitat, prey availability, and octopus traits influence foraging and trophic interactions.
This study examines how octopuses forage across different habitats by tracking prey choice, handling behavior, and habitat use to understand how environmental structure influences feeding strategies and predator–prey interactions.
Conspecific Co-Denning in Octopus Bimaculoides
Repeated co-denning was observed across multiple San Diego County sites, including both same-sex and mixed-sex pairings. These observations suggest that den sharing may be more common than previously recognized.
Are octopus keystone predators?
This study uses artificial dens to establish localized octopus populations in San Diego and monitor how increased octopus presence affects prey communities, habitat use, and surrounding benthic ecosystems.