Sea turtle underwater

Sea turtles in their natural habitat play a crucial role in maintaining marine ecosystem balance.

About this subject

Sea turtles are iconic ocean creatures, with seven recognized species such as the green sea turtle and the hawksbill. These reptiles play vital roles in maintaining coral reef health and seagrass beds by controlling invertebrate populations and promoting seafloor regeneration. Some individuals can live up to 80 years but face growing threats from fishing nets, plastic pollution, and coastal urbanization destroying nesting beaches. Scientists estimate that fewer than 50% of hatchlings survive the early life stage, underscoring their fragile survival. In Brazilian waters, the loggerhead turtle is heavily targeted by traditional fishing communities, while the leatherback, the largest sea turtle, migrates thousands of kilometers between the Pacific and Atlantic to feed on jellyfish.

Frequently Asked Questions

What are the main threats to sea turtles?

Key threats include non-selective fishing nets, plastic pollution (often mistaken for corals), and coastal urbanization destroying nesting beaches. Coral reef degradation also reduces hatchling survival rates.

How many sea turtle species exist?

There are seven recognized species: loggerhead, green, leatherback, hawksbill, olive ridley, Kemp's ridley, and the flatback. Each has distinct habitats and behaviors.

How do sea turtles navigate the oceans?

They use Earth's magnetosphere as a natural compass, detecting magnetic field variations to locate feeding and breeding areas. These migrations can span thousands of kilometers.