Analysis of previously published records shows that the modal size of
juvenile loggerhead sea turtles (Caretta caretta) found around the Uni
ted Kingdom (the area north of 49 degrees N and east of 12 degrees W)
is a carapace length of 20.5 cm. These turtles are believed to origina
te from nesting beaches in North America (principally Florida). We est
imated their trans-Atlantic drift time using data from satellite-track
ed buoys and from a mathematical model and, hence, estimated that the
modal age of these juvenile turtles was between 1.80 and 3.75 years.