Ingo Arndt / Web invading spider {Argyrodes trigonum} Florida, USA.
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Ingo Arndt / Web invading spider {Argyrodes trigonum} Florida, USA.
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Ingo Arndt / Web invading spider {Argyrodes trigonum} Florida, USA.
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Ingo Arndt / Web invading spider {Argyrodes trigonum} Florida, USA.
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Pascal Kobeh / Algae colony invading a bleached and dead hard coral (Porites sp.) Maldives, Indian Ocean.
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Piotr Naskrecki / Bigheaded Ant (Pheidole megacephala) group overpowering and killing larger male Driver Ant (Dorylus sp), Gorongosa National Park, Mozambique
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Christophe Courteau / West African giraffes {Giraffe camelopardis peralta} in millet plantation. Sahel, Niger.
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Sandesh Kadur / Jumping ant (Harpegnathos saltator) climbing a leaf to dislodge a member from an invading colony, India
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Adrian Davies / New Zealand Swampweed (Crassula helmsii) invading wetland, Kent, England, UK, August 2010
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Adrian Davies / New Zealand Swampweed (Crassula helmsii) invading wetland. Kent, England, UK, August 2010
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Mike Potts / Rhododendron bushes flowering, introduced to the UK and now invading moorland, growing wild in great abundance. Beddgelert, Gwynedd, North Wales, UK. June 2009
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Mike Potts / Rhododendron bushes flowering, introduced to the UK and now invading moorland, growing wild in great abundance. Beddgelert, Gwynedd, North Wales, UK. June 2009
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Guy Edwardes / Broad Buckler Fern (Dryopteris dilata) close-up of fern frond unfurling, Hooke, Beaminster, Dorset, England, May
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Edwin Giesbers / RF- Bluebells (Hyacinthoides non-scripta / Endymion scriptum) flowering in Broad buckler fern (Dryopteris dilatata), Hallerbos, Belgium. April. (This image may be licensed either as rights managed or...