Researchers in China have replicated the epic journey of one of the world’s most fascinating migratory fish within the confines of an artificial pool, potentially saving it from extinction. From hatching to maturity and spawning, eels undergo six stages of physical transformation over at least five years as they travel 6,000km (3,700 miles) from the ocean depths to freshwater rivers and lakes. Zhao Feng and his team from the Chinese Academy of Fishery Sciences used satellite-tracking technology...
Climate change and shifting migration patterns are bringing rare research opportunities and new mysteries.
Hunger is a likely reason the whale, dubbed Willapa Willy, travelled inland, experts say.