Definition

Noun: A large marine reptile of the order Testudines, characterized by limbs that have evolved into paddle-like flippers for swimming. Sea turtles are widely distributed throughout the warm and temperate oceans of the world.

Usage

The term "sea turtle" refers specifically to the marine-dwelling species within the turtle family. It is used as a common name to distinguish these ocean-going reptiles from their freshwater or land-dwelling relatives (tortoises, terrapins).

Examples

• The sea turtle swam gracefully through the coral reef.
• Conservation efforts are crucial to protect the nesting beaches of the endangered sea turtle.
• We observed a large sea turtle coming ashore to lay its eggs.

Advanced Usage

• Collective Reference: The term can be used in a general sense to refer to all species within this marine group (e.g., "The biology of the sea turtle is fascinating.").
• In Scientific/Conservation Context: Often used with a species modifier (e.g., "the green sea turtle," "the loggerhead sea turtle") to specify which of the seven living species is being discussed.

Variants and Related Words

• Marine turtle: A direct synonym for "sea turtle."
• Cheloniidae: The scientific family name for most sea turtles (the hard-shelled species).
• Dermochelyidae: The scientific family name for the leatherback sea turtle, which has a leathery shell instead of a hard one.

Synonyms

• Marine turtle

Related Phrases

• Sea turtle nesting: The process where female sea turtles return to beaches to lay eggs.
• Sea turtle conservation: The protection and preservation efforts aimed at sea turtle populations.

Noun

1. any of various large turtles with limbs modified into flippers; widely distributed in warm seas