Young spiders in a huddle: Our top pic was captured by clenchpen2 and shows a huddle of young spiders 'spotted in the garden, just before they scattered'. The image was taken on a Canon 60D, 60mm macro lens, f8 1/125, ISO 400.Photograph: clenchpen2/GuardianWitnessCoral cluster, submitted by madidusPhotograph: madidusmadidusmadidusmadidus/GuardianWitnessBroken ice in Cophenhagen harbour contributed by washboard101 Photograph: washboard101washboard101/GuardianWitnessPhotograph: washboard101/GuardianWitnessShoal of Jacks: 'I dropped into a massive ball of jacks on a dive trip to Sipadan Island, Malaysia. The island was popularised by Jacques Cousteau and is often cited as one of the top 10 dive sites in the world,' says pxguruPhotograph: pxguru/GuardianWitnessA cluster of sheep: Taken with iPhone 4S with flash on, by Andreas Hatjoullis Photograph: Andreas HatjoullisAndreas Hatjoullis/GuardianWitnessPhotograph: Andreas Hatjoullis/GuardianWitnessCity workers captured by blueboy59 Photograph: blueboy59/GuardianWitnessDroplet cluster submitted by ahaselden Photograph: ahaselden/GuardianWitnessLots of little houses: the view from Carlsberg Group HQ in Copenhagen over terraced houses in Vesterbro, in this second entry from washboard101 Photograph: washboard101/GuardianWitnessTangled up in rust: contributor hogsvilleBrit noticed this bundle of steel rods at a building site Photograph: hogsvilleBrit/GuardianWitnessThen it rained: rorymcdonald gets an aerial view of a crowd in Prague Old Town waiting for the Astrological Clock to chimePhotograph: rorymcdonald/GuardianWitness