Ink sac

Ink sac

A diverticulum of the rectum of most cephalopods, where an 'inky" melanin solution is stored. The ink is ejected from a duct opening at the base of the siphon. It serves to cloud the water, and enable these animals to escape from predators.

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Part of Speech: noun
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Blossary:
Industry/Domain: Natural environment
Category: Coral reefs
Organization: NOAA
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Related terms

ink sac

Natural environment; Coral reefs

A diverticulum of the rectum of most cephalopods, where an 'inky" melanin solution is stored. The ink is ejected from a duct opening at the base of the siphon. It serves to cloud ...

Ink

Software; Computer; Operating systems

In the Ink technology, raw data that represents the input drawn by the user with the stylus.

sac

Anatomy; Human body

A bag shaped structure that acts as a container. The bladder in humans is a sac.

sac

Health care; General

Pouch; a bag-like structure.

nodulose

Natural environment; Coral reefs

With small nodules, knobs or swellings.

fissure

Natural environment; Coral reefs

A deep and narrow depression cutting across the reef front with origins relating to jointing planes in the reef limestone or non-limestone bedrock.

damselfish

Natural environment; Coral reefs

A large family (Pomacentridae) of bony fishes which are abundant and common inhabitants of coral reefs. They possess robust, deep, and laterally compressed bodies. The majority of ...

complementary resources

Natural environment; Coral reefs

A pair of resources for which consumption by the consumer of one resource reduces its requirement for the other.

antennule

Natural environment; Coral reefs

A small antenna, especially the first pair of antennae in crustaceans.

odontophore

Natural environment; Coral reefs

A tooth-bearing structure found in most mollusks, except bivalves. It consists of several muscles and a cartilage which support the radula and radula sac; the term is also applied ...