Seahorses spotted in the River Thames

Image source, ZSL

Six seahorses have been spotted in the River Thames in London in the past two months.

That's compared to usually only one or two a year.

Biologists have been studying the seahorses, and have spotted short-snouted seahorses and spiny seahorses living in the river.

But they're not yet sure what might have caused this recent surge in sightings.