leatherback turtle
C2Scientific/Technical, Environmental Journalism, Wildlife Education
Definition
Meaning
A very large sea turtle that lacks a hard shell, having a leathery carapace instead.
The largest of all living turtles and the fourth-heaviest modern reptile, known for its long migrations, deep diving capabilities, and unique physiology among sea turtles.
Linguistics
Semantic Notes
The term refers specifically to a single species: Dermochelys coriacea. It is a compound noun where 'leatherback' describes the texture of its carapace, distinguishing it from other sea turtles with hard shells.
Dialectal Variation
British vs American Usage
Differences
No significant lexical differences; both varieties use 'leatherback turtle' or simply 'leatherback'. British sources may more frequently include 'leatherback sea turtle' for clarity.
Connotations
Identical connotations of an endangered, remarkable, and ancient marine creature.
Frequency
Equally low-frequency in both varieties, confined to specific contexts like biology, conservation, and natural history documentaries.
Vocabulary
Collocations
Grammar
Valency Patterns
[The/An] leatherback turtle [verb]...Leatherback turtles [verb]...Vocabulary
Synonyms
Strong
Neutral
Weak
Vocabulary
Antonyms
Phrases
Idioms & Phrases
- “None directly associated.”
Usage
Context Usage
Business
Rare; used in ecotourism or conservation funding contexts (e.g., 'The resort sponsors leatherback turtle protection programmes.').
Academic
Common in marine biology, zoology, and environmental science papers describing species morphology, migration, or conservation status.
Everyday
Used in general discussions about wildlife, endangered species, or nature documentaries.
Technical
Precisely used in herpetology and conservation biology for species identification, population studies, and habitat management plans.
Examples
By Part of Speech
verb
British English
- The team will leatherback-track the migration routes using satellite tags. (non-standard, rare technical usage)
American English
- Researchers aim to leatherback-tag more juveniles this season. (non-standard, rare technical usage)
adverb
British English
- None standard.
American English
- None standard.
adjective
British English
- The leatherback-turtle conservation project received new funding.
- We observed leatherback-turtle nesting behaviour.
American English
- The leatherback turtle population is critically endangered.
- A leatherback turtle research centre was established.
Examples
By CEFR Level
- I saw a picture of a leatherback turtle.
- The leatherback turtle is very big.
- Leatherback turtles are the largest turtles in the world.
- The leatherback turtle has a soft, leathery shell.
- Conservationists are working to protect leatherback turtle nesting beaches from development.
- Unlike other sea turtles, the leatherback turtle cannot retract its head into its shell.
- The precipitous decline in the leatherback turtle population has been attributed to bycatch in fishing gear and egg harvesting.
- Leatherback turtles undertake transoceanic migrations, navigating from tropical nesting grounds to temperate foraging areas.
Learning
Memory Aids
Mnemonic
Imagine a turtle wearing a black leather jacket instead of a shell – it's a LEATHERBACK.
Conceptual Metaphor
Often metaphorically framed as a 'gentle giant' or 'ancient mariner' of the oceans.
Watch out
Common Pitfalls
Translation Traps (for Russian speakers)
- Avoid literal translation as 'кожаная спина черепаха'. The established term is 'кожистая черепаха' (literally 'leathery turtle').
- Do not confuse with 'зелёная черепаха' (green sea turtle) or 'бисса' (hawksbill turtle).
Common Mistakes
- Misspelling as 'leather back turtle' (should be one word or hyphenated: leatherback/leather-back).
- Incorrectly classifying it as having a 'soft shell' like a softshell turtle (Trionychidae); it has a leathery carapace with embedded osteoderms, which is distinct.
Practice
Quiz
What is the primary distinguishing physical feature of the leatherback turtle?
FAQ
Frequently Asked Questions
It is typically written as two words ('leatherback turtle'), though 'leatherback' alone is common. The hyphenated form 'leather-back turtle' is occasionally seen but less standard.
Yes, the leatherback turtle is listed as Vulnerable globally by the IUCN, with some subpopulations, like the Pacific leatherback, listed as Critically Endangered.
Their diet consists almost exclusively of jellyfish (cnidarians) and other soft-bodied pelagic organisms. This specialization makes them vulnerable to plastic bag pollution, which they can mistake for prey.
They are the largest living turtles. Adults can reach over 1.8 metres (6 ft) in length and weigh up to 700 kilograms (1,500 lb).