Recent surveys conducted off the southern coast of Sri Lanka reveal a worrying trend: the number of blue whales, the largest animals on Earth, has significantly dropped over the past decade. Researchers attribute this decline primarily to rising sea surface temperatures, which disrupt the delicate marine ecosystem these giants depend on. As ocean waters warm, the availability of krill – the blue whales’ main food source – diminishes, forcing the mammals to travel greater distances with reduced feeding success. This environmental stress is compounded by increased human maritime activity, including shipping traffic and fishing operations, which pose direct threats through ship strikes and entanglement in gear.

Key factors impacting blue whale populations:

  • Ocean warming: Alters prey distribution and abundance
  • Increased shipping lanes: Heightens risk of…