14 February 2013Last updated at 17:48

In Pictures: Valentine's Day in nature

Kris Williams captured this crystal blue heart-shaped lake looking over towards Snowdon from the Pyg Track.

A 10-spot ladybird with an unusual black heart on its back by Tony Llewellyn in Llangollen.

Eiona Roberts found a fern prepared to unravel its heart in the woods.

Simon Turton discovered a heart left behind in an old oak after a branch snapped off many years ago.

Lesley Newcombe spotted this pair of mating damselflies forming a wonderful azure blue heart.

Bleeding-hearts (Lamprocapnos spectabilis) - a popular cut flower for Valentine's Day by Belinda Evans.

Swans mate for life. This pair were spotted in a loving mood on Roath Park lake in Cardiff by Martin Forde.

Even fungi have a heart as Joy Mardon discovered in deepest, darkest Pembrokeshire.

Say it with flowers. Courting puffins on Skomer Island by Claire Carter.

This hanging heart-shaped lichen was snapped by Richard Hurn.

A frog prepares to be transformed into a handsome prince. Image by Joe D'Arcy.

A heart of foam taken off the Pembrokeshire coast near Porthgain by Dawn Gibbons.

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