beaked whale

Thân thiện

A beaked whale surfaces in the deep blue ocean.

Definition

1. Noun:
   • A beaked whale is any of several species of medium-sized toothed whales (family Ziphiidae) that inhabit deep ocean waters worldwide. They are named for their distinctive, elongated, beak-like snouts or jaws. A key anatomical feature is the presence of only one or two pairs of vestigial (small and non-functional) teeth in the lower jaw, which are often not visible externally.

Usage Examples

• Noun:
  • The Cuvier's beaked whale holds the record for the deepest and longest dive of any mammal.
  • Researchers identified the stranded animal as a rare Baird's beaked whale.
  • Beaked whales are elusive and difficult to study due to their deep-sea habitat.

Advanced Usage

• "toothed whale": This is the broader biological category (suborder Odontoceti) to which beaked whales belong, distinguishing them from baleen whales (suborder Mysticeti).
  • Unlike baleen whales, the beaked whale is a type of toothed whale, though its teeth are greatly reduced.

Variants and Related Words

• Ziphiidae (n): The scientific family name for beaked whales.
  • All beaked whales are members of the family Ziphiidae.
• Cuvier's beaked whale (n): A specific, widely distributed species ().
• Baird's beaked whale (n): A specific, larger species () found in the North Pacific.

Synonyms

• Ziphiid (n): A technical synonym derived from the family name, used primarily in scientific contexts.
  • The study focused on the diving behavior of various ziphiids.

Different Meanings

• The term "beaked whale" refers specifically to the zoological family Ziphiidae. It is not a general term for any whale with a pointed snout (e.g., some dolphins have beak-like rostrums but are not beaked whales).

Học thuật

Noun

1. any of several whales inhabiting all oceans and having beaklike jaws with vestigial teeth in the upper jaw