Aquarium invaders

At this time of year many lakes and rivers are thick with it but, while many anglers may curse the green stuff, here’s why the underwater world would be all the poorer without it...

The question about wild swimming I get asked most often is: “is it safe?” Rarely does this query refer to the risk of drowning – the usual concern is about the quality of the water. And understandably

DR PETER BURGESS Peter is our disease expert. Send questions his way if you have pathogen problems. BOB MEHEN Bob is a master of fishkeeping general knowledge and community tanks. JEREMY GAY Jeremy is

I’M CURRENTLY READING a wonderful book called Local, by British explorer Alastair Humphreys. After years of trekking across deserts, mountains and jungles he decides to buy a map of his local area ‘so

In Potopaddu harbour, on the island of Sumbawa, Indonesia, we were navigating through a narrow and tricky channel, with minimal depths, which then widened into a large, sheltered pool. There were seve

1 BASKING SHARK Basking sharks (Cetorhinus maximus) are the world’s second largest shark. They grow bigger than great whites and can reach a staggering 12 metres long, yet these gentle giants feed on