Final answer:
The Green sea turtle is named after the green color of its fat and is the second largest sea turtle, preceded by the Leatherback sea turtle, which is the largest. Playa Grande plays a significant role in the conservation and natural selection processes affecting sea turtles.
Step-by-step explanation:
The sea turtle named for the color of its fat is the Green sea turtle, which also happens to be the second largest of the sea turtles. The largest turtle is the Leatherback sea turtle, which can grow up to seven feet in length and weigh over 2,000 pounds. In contrast, the Green sea turtle is slightly smaller but still of significant size and characterized by its distinctive layer of green colored fat.
The Leatherback sea turtle populations in the Pacific Ocean are of critical conservation concern, and areas like Playa Grande are crucial for the species' nesting. Natural selection has favored these turtles using beaches like Playa Grande due to the high success rates of their hatchlings, driven by instincts to reach the ocean despite the dangers presented by predators. The Leatherback sea turtle's size and unique adaptations have allowed it to become an apex navigator of the ocean currents, covering vast distances in the marine ecosystem.