ink sacs
Octopus defense organs
Ink sacs are organs in cephalopods—squid, octopuses, and cuttlefish—that produce and store dark fluid.
When threatened, the animal expels this ink to create a cloud that obscures its escape from predators.
The ink of cuttlefish historically provided sepia pigment for artists and writers.
Eight-limbed sea mollusk
- squidTen-armed marine mollusk
- cuttlefishColor-changing cephalopod with internal shell
- nautilusChambered marine mollusk
- tentaclesFlexible grasping appendages
mantle · siphon · jet propulsion · chromatophores · beak · suction cups · intelligence · invertebrate
Tentacled marine mollusk class
- molluskSoft-bodied invertebrate, often shelled
- glandSecreting body organ
- secretionSubstance released by glands
- melaninNatural coloring compound
sepia · organ · tissue · duct · reservoir · membrane · pigment · biochemistry
Atmospheric water vapor mass
- smokescreenConcealment through misdirection
- distractionThing diverting one's attention
- deterrentThing that discourages action
- confusionMental disorientation or bewilderment
survival · alarm response · startle · concealment · decoy · pseudomorph · discharge · protection
Lightless ocean zone
- oceanMassive saltwater body
- coral reefCalcium carbonate marine ecosystem
- benthicOf the sea bottom
- pelagicOf the open sea
marine biology · oceanography · predator-prey · trawling · bycatch · aquarium · specimen · dissection
Substance adding taste
- coloringAdding pigment to something
- MediterraneanSea between Europe, Africa, Asia
- Spanish cuisineCooking of Spain
- Italian cuisineCooking from Rome's homeland
octopus
Eight-limbed sea mollusk
- squidTen-armed marine mollusk
- cuttlefishColor-changing cephalopod with internal shell
- nautilusChambered marine mollusk
tentacles · mantle · siphon · jet propulsion · chromatophores · beak · suction cups · intelligence · invertebrate · giant squid
cephalopod
Tentacled marine mollusk class
- molluskSoft-bodied invertebrate, often shelled
- glandSecreting body organ
- secretionSubstance released by glands
melanin · sepia · organ · tissue · duct · reservoir · membrane · pigment · biochemistry · musculature
cloud
Atmospheric water vapor mass
- smokescreenConcealment through misdirection
- distractionThing diverting one's attention
- deterrentThing that discourages action
confusion · survival · alarm response · startle · concealment · decoy · pseudomorph · discharge · protection · warning
deep sea
Lightless ocean zone
- oceanMassive saltwater body
- coral reefCalcium carbonate marine ecosystem
- benthicOf the sea bottom
pelagic · marine biology · oceanography · predator-prey · trawling · bycatch · aquarium · specimen · dissection · fishery
flavoring
Substance adding taste
- coloringAdding pigment to something
- MediterraneanSea between Europe, Africa, Asia
- Spanish cuisineCooking of Spain