by Sandra Ferrer BREST, France (AFP) — The sight of a basking shark’s brooding silhouette gliding through the waters off western France is more than just a rare treat for sailors — it is a boon for scientists trying to trace its secretive migrations across the globe. It may be the world’s second largest fish, growing to more than 10 metres (35 feet), but the basking shark, or Cetorhinus maximus, is an enigma for scientists […]