Bence Mate / Leaf cutter ants (Atta sp) carrying plant matter, Costa Rica.

Solvin Zankl / Green algae (Ulva nematoidea) on white background, from Swakopmund, Namibia, Africa, South Atlantic, April. Preserved specimen.

Kevin Schafer / Frozen gas bubbles beneath surface of frozen lake with snow in the shape of a heart, Abraham Lake, Canadian Rockies, Alberta, Canada

Pascal Pittorino / Heart formed by erosion into the rock, Calanches of Piana, Gulf of Porto, Parc Naturel Regional de Corse / Corsica Natural Regional Park, Corsica Island, France, September 2009.

Alex Hyde / Heart-shaped leaf of Alpine Cyclamen (Cyclamen purpurascens). Plitvice Lakes National Park, Croatia. January.

Alex Hyde / Heart-shaped leaf of Alpine Cyclamen {Cyclamen purpurascens}. Plitvice Lakes National Park, Croatia. January.

Staffan Widstrand / Heart-shaped lichen on rock, Laponia Circuit, along the Padjelantaleden trail, Padjelanta National Park and Sarek National Park, Norrbotten, Lapland, Sweden.

Mark Taylor / Two white doves on pink background looking at each other.

Pal Hermansen / Heart shape in grass near farm, with Reindeer crossing sign, Telemark, Norway, August 2012.

Mark Taylor / Black-and-white rabbit, Bandit, with soft heart surround.

Juergen Freund / Aerial view of Hardy Reef, Great Barrier Reef, August 2011

Andrew Parkinson / 2020VISION / Murmuration of Common starlings (Sturnus vulgaris) forming into a heart shape above Aberystwyth pier prior to roosting, Ceredigion, Wales, UK, December