Night view of Medellin with newly built apartment blocks in the foreground

Night view of Medellin sprawling out along the valley

Carolina, Diego and me on top of Cerro Nutibarra

View towards the centre of Medellin

The fantastic Medellin metro!

The eye of a turtle. Tumours are sometimes present around the eye of the turtles.

The clean shell of a Hawksbill turtle

Injecting the PIT (Personal Identification Tag). This can only be read by a scanner run over the turtle, not from a satellite.

Weighing the turtle - they can be very heavy. One we weighed was 20kg

Checking the plastron (underside) for any marks or signs of disease

Hold it still! Checking for marks or signs of disease

Exact measurement of the carapace using calipers

Me holding the turtle while the carapace is measured

All done! Ready to be released

The wet towel over the head helps keep the turtle calm while it is being measured and tagged