Two litter-pickers from Grimsby have created a map of discarded balloons to highlight the dangers they present to wildlife.

It documents where latex and foil balloons – let off for events including memorials, birthdays and gender reveals – have fallen to earth.

Zac Robinson, who picks litter with his dog, and James Elliott, otherwise known as the Canoe River Cleaner, began compiling the interactive map last year.

They felt “something had to be done” because balloons were being found “almost daily” in fields, woods, rivers and on beaches.