The European eel is critically depleted. UK anglers still catch them at night on worm, deadbait and by accident on a maggot feeder. They are catadromous — they belong to a long migration — and they are not a target to chase for a bag.
If you fish worm at night on a stillwater or river, you may meet one. Carry forceps, keep the fish wet, cut the line if it's deeply hooked, and return it. Do not transport eels. Do not keep them to eat. This app will not help you target them as a crop.
Habitat
Silt, snags, outflows, and the bottom of stillwaters and slow rivers. They move after dark.
Seasonal behaviour
Warm nights in summer and early autumn. They are not a winter sport for most people.
On the bank
A slow, heavy pull. They wrap in weed and on the net. Don't panic; keep pressure and get them in the mesh.
Fish care
Wet hands, towel if you must grip, unhook fast, back they go. Never dry them out for a photo. Never keep one.
Feeding approach
You don't feed eels like a shoal of roach. A worm on the bottom at night is how most encounters happen.
Common mistakes
Keeping eels. Deep-hooking and tearing. Posing a fish that should already be in the water.
What to change if it isn’t working
If you don't want eels, don't leave a worm out all night. If you hook one, the job is welfare, not a change of method.