• Welcome to TONMO, a community of cephalopod experts, hobbyists and enthusiasts. Established in 2000, we are the founders of TONMOCON, and birthplace of World Octopus Day and Cephalopod Awareness Days. ...You can register here, and Introduce Yourself. To rid yourself of ads and enjoy other perks, become a Supporter for just $50/year. (Now accepting bitcoin & other crytpo!) ...Follow us on Twitter and YouTube for more cephy goodness.
  • Our Photo & Video Gallery contains categorized visual content submitted by our membership through the years; we thank you for your contributions!

Octopus Care

Photos of octopuses in saltwater aquariums

Media comments

  • Harley catches crab.MOV
    Fearing the worst. We have not seen Harley for days. Waiting nervously each day and night to see Harley We set up the camera in the hope that we...
  • Harley catches crab.MOV
    I am buying a Red Sea 350 and would like recommendations for the necessary equipment, Skimmer, pump, chiller , secure acrylic or glass top, Chato...
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