Vulnerable
IUCN Status
Deepest diving marine reptile
500 kg
Average Weight
Heaviest living reptile
1,280 m
Dive Depth
Reaches abyss-depth waters
Zero Scutes
Shell Type
Flexible leathery carapace
Biological Profile & Identification
The Leatherback Sea Turtle (Dermochelys coriacea) is an evolutionary marvel and the undisputed monarch of all living reptiles. Unlike all other marine turtles, Leatherbacks do not possess a bony, hard shell with keratinous scutes. Instead, their streamlined carapace is composed of a thick, flexible, oil-saturated rubbery skin embedded with thousands of tiny polygonal osteoderms (bone plates), traversed by seven prominent longitudinal ridges.
Key Anatomical Characteristics
- Hydrodynamic Ridged Carapace: Dark grey to inky black skin mottled with white and pink spots, engineered for low drag during trans-oceanic migrations.
- Enormous Front Flippers: Spanning up to 2.7 meters (9 feet) from tip to tip, the largest paddle-to-body ratio of any marine creature.
- Esophageal Papillae: The interior of their mouth and throat is lined with hundreds of sharp, backward-pointing keratinous spines (papillae) designed to prevent slippery jellyfish from escaping while expelling swallowed seawater.
Top Global Destinations for Leatherback Encounters
- Tortuguero National Park (Costa Rica) — Massive nesting arribadas along the wild Caribbean coast.
- Grande Riviere (Trinidad & Tobago) — One of the highest density nesting beaches on Earth.
- Playa Grande (Las Baulas National Park, Costa Rica) — Pacific nesting sanctuary.
