The dolphin was found washed up on the banks of the River Barrow at St Mullins, approximately 30km from the sea

A dolphin has washed up on the banks of the River Barrow at St Mullins in Co Carlow. Photo: Tony McGahan

A dolphin has washed up on the banks of the River Barrow at St Mullins in Co Carlow. Photo: Tony McGahan

After 20 years of living in St Mullins in Co Carlow, geoscientist Tony McGahan has never seen a dolphin swimming in the River Barrow, let alone a dead one washed up on the riverbank.

But this week, he came across the carcass of a two metre long Common Dolphin washed up on the banks of the River Barrow in St Mullins, a staggering 30km from the sea.