The diagram delineates the life cycle of sea turtles, detailing the sequential stages from hatching through adulthood and subsequent reproduction.
This life cycle encompasses four primary phases: egg incubation, juvenile foraging, adult maturation, and reproductive activities, all highlighting the unique migratory behaviors intrinsic to sea turtles.
The life cycle commences with female sea turtles laying eggs on sandy beaches, typically under the cover of darkness, where a single female can deposit up to 100 eggs. These eggs undergo an incubation period of approximately 1 to 2 weeks before hatching. Once the hatchlings emerge, they embark on a perilous journey to the open ocean, a phase often referred to as ‘lost years,’ which extends from ages 2 to 20. During this time, young turtles inhabit the surface waters, engaging in foraging while navigating a myriad of threats, including predation.
Following the juvenile phase, sea turtles undergo a developmental migration, lasting between 30 to 50 years, wherein they mature in shallow coastal waters. Upon reaching sexual maturity, adult females return to their natal foraging grounds to mate before migrating to designated nesting sites. This nesting occurs approximately every two weeks, illustrating the cyclical nature of their reproductive behavior. Adult males, conversely, do not participate in nesting but return to foraging areas post-mating. Thus, the life cycle of sea turtles is characterized by extensive migration and a profound connection to their birthplaces, reinforcing the cyclical patterns of mating and nesting inherent in their existence.