Definition

1. Noun:
   • A species of requiem shark: The dusky shark is a relatively large, slender shark belonging to the family Carcharhinidae.
   • Physical description: It is characterized by a blue-grey to bronze-grey back (dorsal side) and a whitish underside, with a moderately long, rounded snout.
   • Habitat and distribution: It is a coastal-pelagic species found in tropical and warm-temperate waters worldwide, often from the surf zone to the outer continental shelf.

Usage Examples

• Noun:
  • The dusky shark is known for its long migratory patterns.
  • Researchers are studying the population decline of the dusky shark in the Atlantic.
  • We spotted a large dusky shark near the reef.

Advanced Usage

• In scientific/ecological context: The term is used precisely to refer to the species .
  • Conservation efforts for the dusky shark are complicated by its slow growth rate.
• In fisheries context: Refers to the species as a catch, bycatch, or management unit.
  • The dusky shark is often caught as bycatch in longline fisheries.

Variants and Related Words

• Carcharhinus obscurus (n): The scientific binomial name for the dusky shark.
• Requiem shark (n): The common name for the family (Carcharhinidae) to which the dusky shark belongs.

Synonyms

• None precise: There is no exact common synonym. It is specifically . Descriptive phrases like "blue-grey shark" or "slender requiem shark" may refer to it but are not direct synonyms.

Related Phrases

• Dusky shark population: Refers to the collective group of this species in a specific area.
  • The dusky shark population off South Africa is well-studied.
• Dusky shark fishery: Refers to fishing activity targeting or significantly impacting this species.
  • Regulations have closed the dedicated dusky shark fishery.

Related Idioms

• None: There are no common idioms specifically featuring the term "dusky shark."

Noun

1. relatively slender blue-grey shark; nearly worldwide in tropical and temperate waters