dài mào, also known as the hawksbill turtle, is a genus of hawksbill turtles in the turtle family Turtle family. It is found in tropical and subtropical oceans such as the Atlantic, Indian and Pacific Oceans, inhabiting coastal coral reefs, bays, estuaries and clear lagoons, generally operating in waters above 18.3 meters deep. It is larger, with a dorsal carapace length of 62–114 cm and a weight of 35–127 kg. He has a fierce temperament, strong mobility, and a fast swimming speed, often haunting coral reefs. Since they often forage for poisonous sponges and spiny animals, their meat contains considerable levels of toxicity.
The front of the palate is hooked and curved in the shape of an eagle's beak. The head has large symmetrical scales on the back, with 2 pairs of forehead scales, and several small scales on the front of the neck, throat and chin. The dorsal carapace is flatter and heart-shaped; the shield is arranged in a distinctly tile-like manner. There are 11 edge shields on each side, forming a pronounced strong serrated shape at the back of the body two-thirds. The limbs are flipper-foot-shaped, the forelimbs are longer than the hindlimbs, covered with large scales and shields juxtaposed, and each limb has 2 claws on the outside. The dorsal scales of the head are black to tan, light in color at the scale margins, and the jaw margins are yellow with dark spots. The dorsal carapace is brownish red with pale yellow clouds and a metallic luster. The ventral surface is yellow with brown patches.
Hawksbill turtles prefer to feed on coral reefs, continental shelves and shoals. Although it is an omnivore, the main food is sponge. Sponges account for more than 70% of the total diet of the hawksbill turtle population. In addition to sponges, their diet includes seaweeds and stingrays such as jellyfish and anemones, including the extremely dangerous hydra squirrel (highly toxic). Shrimp and shellfish are also sometimes preyed upon, and their jaws are so powerful that they can crush crab shells or even extremely hard and thick shells. The hooked beak of an eagle can also easily hook shrimp and crabs out of coral crevices.