<p>Satellite tracking methods and results</p><p>In 2009 a satellite transmitter was attached to a male turtle from the same study site and the male was tracked via satellite for 81 days. The route was reconstructed using data of Argos location classes 3, 2 and 1 (estimated errors of less than 1km). A standard filter was applied to exclude locations inferring implausible speeds (>5 km h-1) and turning angles (<25o) (Witt et al., 2010). Minimum speeds were calculated assuming straight line travel between transmissions. From Alagadi beach the turtle travelled east along the north coast of Cyprus, passing a smaller nesting rookery to another major nesting site. Although minimum speeds averaged 1.5 km h-1 along the coast, there was a demonstrable slowing to 0.7 km h-1 at this second major rookery. The turtle undertook his first pelagic crossing to reach the Turkish coast where he spent 12 days travelling at low speeds (average 0.6 km h-1) within Mersin Bay in proximity to (< 20 km) the nesting sites of Alata, Kazanlı and Akyatan, the latter being the single most important rookery for the Mediterranean population of green turtles, in a pattern consistent with mate searching behaviour. The turtle embarked on a second pelagic crossing to reach Syria, then followed the Eastern Basin coastline to the Bay of Tinah, Egypt, where he remained for a further 43 days of transmission at low speeds (minimum average 0.1 km h- 1). The diversion to Turkey took a total of 19 days, adding 348 km to the journey, and increased the total journey length by 44% when compared to a beeline route (taken from the last location at the north eastern tip of Cyprus to the point at which the turtle met the Syrian coast). </p><p>Supplementary References Witt, MJ, Åkesson, S, Broderick, AC, Coyne, MS, Ellick, J, Formia, A, Hays, GC, Luschi, P, Stroud, Stedson, Godley, BJ, 2010 Assessing accuracy and utility of satellite-tracking data using Argos-linked Fastloc-GPS. Anim. Behav. 80, 571-581</p>