At least three people have been killed and more than 100 injured, some seriously, in two explosions at the finish line of the Boston Marathon. TV footage showed bloodied runners and spectators being treated at the scene and the road strewn with debris. The FBI said that this was a "potential terrorist
LIKE A living balloon this baitball of sardines is ready to burst when threatened by a pointy nosed sailfish .
Like a scene from a fairytale, THOUSANDS of fireflies create an enchanting glow as they dance in a forest .
A SPECTRUM of colours fills the sky during this spectacular and natural display of light .
SNEAKING slowly into the water, this Bengal tiger plans a vicious attack on three unsuspecting deer .
SEA LIFE and greenery in one shot show nature at its very best .
Armed with a snorkel, flippers and her skimpy bikini, an intrepid female free diver swims alongside an array of reef sharks .
FLYING through the air, these delighted pooches pull their best poses mid-flight .
PERCHING on top of a gate, this young barn swallow waits patiently for his mum to return with dinner .
COULD this be the most distastrous wedding cake fail EVER? Most brides opt for a traditional tiered white wedding cake decorated with delicate pink roses and lace for their big day .
VENTURING into the ocean with self-made spears and nets, the fishermen of Zanzibar put their lives on the line when they catch food for their families .
BRAIDED, sculpted and beaded, these are the eye-catching hairstyles worn by the tribal women of Angola .
An Italian photographer travelled to Chile where he visited several star-gazing sites, home to some of the world's most advanced telescopes, located in the spectacular setting of the Atacama desert .