"Those would be Olive Ridley turtles, lepidochelys olivacea. They are the
smallest marine turtles, and they have a unique nesting phenomenon called
an Arribada, which translates to 'the arrival'. This species mass nests on beaches
in Mexico, Costa Rica, and India, where a single mass nesting can see over
100,000 females laying eggs over the course of a few days.
The officer is there to detract egg poachers, but interestingly in some parts
of Costa Rica they practice a inclusive conservation strategy where locals are
allowed to harvest the eggs in the first two days, and in return they help to
clean and protect the nesting sites for the remaining year.
Source: I did my masters dissertation on these turtles".
Be sure to visit www.lamanzanilla.info for more information about La Manzanilla Mexico.