an octopus guarding the entrance

invertebrate underwater guarding entrance vulgaris organism wildlife aquarium octopus species seafood animal coral home reef food fish mediterranean sea common octopus octopus cephalopod animal nature water sea travel siphon body sea life mediterranean seafood cyprus marine life cyprus vulgaris tentacles wildlife ocean tropical colorful closeup beautiful jet propulsion mantle friend octopus friendly octopus chromatophore sandy bottom seabed sea floor night activity juvenile baby octopus playful octopus golden bronze walking sand hiding dark aquatic ocean life marine species eight tentacles