featurewild files: sea turtles of batangas bay
Luzon Island, Philippines
- Chevron operates a fuel terminal in San Pascual, Batangas, situated at the southern tip of Luzon Island in the Philippines.
- The terminal property includes three kilometers of coastline on Batangas Bay, the only beachfront in the waters of San Pascual.
- Employees from the terminal have regularly helped remove marine debris from the beach area since 2007.
In January 2012, Chevron workers observed female sea turtles coming ashore and nesting on the terminal’s sandy beachfront.
They were identified as Olive Ridley turtles, a species listed as “vulnerable” on the International Union for Conservation of Nature (IUCN) Red List.
sea turtles play an important role in marine ecosystems as they:
Olive Ridley sea turtles are found primarily in the tropical regions of the Atlantic, Pacific and Indian Oceans.
Olive Ridley turtles are named for the olive green hue of their top shell or carapace. The origin of the word “ridley” is unknown.
one of the world’s two smallest sea turtles
(50 kg) maximum adult weight
(3.8 cm) typical hatchling length
(76 cm) maximum adult length
diet consists of:
other aquatic invertebrates
They can also eat seaweed and algae, if necessary.
females are able to begin laying eggs
between 10 and 15 years of age.
major threats include:
- Birds, mammals and reptiles that prey on the eggs and hatchlings
- Humans that harvest the eggs and capture adults for food
- Fishing and marine transport threats such as boat strikes and entrapment in fishing lines or nets
- Marine debris and pollution
- Loss of nesting habitat from beach erosion due to development, natural disaster and sea level rise
DENR designated the Batangas Terminal coastline as a nesting ground sanctuary for Olive Ridley sea turtles.
DENR also designed a training program to help Chevron staff protect and care for the nesting sites and hatchlings.
Since 2016, employees and Chevron business and community partners have removed between 1.5 and 2.5 tons of marine debris yearly from the San Pascual coastline.
The nesting period from October 2018 to March 2019 yielded six nesting sites, an increase of 300% from the previous year.
At one of these nesting sites, 77 hatchlings emerged from a clutch of about 100 eggs.
our actions were consistent with our goal to
we strive to avoid or reduce the potential for significant impacts on sensitive species, habitats and ecosystems
Wild Files is a series on Chevron.com that spans the world to cover interesting examples of how we deliver on our commitment to environmental stewardship.
Published: July 2019