They were kept as pets by the Romans, have been worshipped as deities, and travel a staggering 6,000km before they reach maturity. European eels are truly exceptional.
They are also critically endangered.
With the help of a dedicated team of citizen scientists, ZSL monitors them in the Thames to find out more about them and get an insight into their decline. Check out our new eel infographic to learn more http://zslsites.org/elvers/
A new strain of chytrid fungus has been found in captive newts and salamanders in the UK. If it spreads it could threaten species like the endangered great crested newt.
This father's day we're taking a look at 'bachelor birds'. They might not be the best dads out there, but they could be crucial to securing a future for New Zealand's rare hihi, according to recent research by ZSL scientists.