SHE might not yet have learnt to walk, but at just 20 months old Rosanna Ogden is already a formidable swimmer.

The aquatic tot, from Lancashire, was able to swim unaided at just 13 months thanks to a holiday in Spain.

It is an even more remarkable feat as she was forced to undergo an eight-hour operation at just six weeks old after doctors detected a rare and life-threatening tumour in her heart.