water bug

water bug

Observation - water bug - UK and Ireland. Description: I see this one in my pond, there are hundreds of them, on the bottom. Not sure if it is a larva or this is the grovn state? Six leggs, two tails-like rear antennas??

I see this one in my pond, there are hundreds of them, on the bottom.
Not sure if it is a larva or this is the grovn state?
Six leggs, two tails-like rear antennas??