Definition

Noun: 1. A large, primitive shark widely distributed in warm seas: This term refers specifically to a member of the family Hexanchidae, characterized by having six gill slits, unlike most sharks which have five. It is considered a more primitive species within the shark lineage.

Usage

• The term "six-gilled shark" is a common name used to identify sharks belonging to the genera (e.g., the bluntnose sixgill shark) or (e.g., the broadnose sevengill shark, though note: 'sevengill' is a different species). It is used in marine biology, fishing, and general descriptions of elasmobranch fish.
• It functions as a countable noun (e.g., , ).

Examples

• Noun:
  • The divers were thrilled to encounter a six-gilled shark near the canyon wall.
  • The six-gilled shark is often found in deep, temperate, and tropical waters worldwide.
  • Researchers are studying the feeding habits of the six-gilled shark.

Advanced Usage

• "Bluntnose six-gilled shark": A more precise common name for , the most widely known species.
  • The bluntnose six-gilled shark is one of the largest carnivorous fish on the continental shelf.

Variants and Related Words

• Hexanchid (n): The technical, scientific term for any shark in the family Hexanchidae, which includes six-gilled and seven-gilled sharks.
  • Hexanchids are sometimes called "cow sharks."
• Cow shark (n): Another common name for sharks in the family Hexanchidae.
  • The cow shark is easily identified by its extra gill slit.

Synonyms

• Bluntnose sixgill shark (n): A specific synonym for the most common species ().
• Hexanchus (n): The genus name, often used in scientific contexts.

Related Phrases

• Deep-sea shark: A descriptive phrase that often applies to the six-gilled shark due to its common habitat.
  • Many deep-sea sharks, like the six-gilled shark, are rarely seen by humans.

Noun

1. large primitive shark widely distributed in warm seas