Piotr Naskrecki / Painted Reed Frog (Hyperolius marmoratus) being eaten by Fishing Spider (Pisauridae), Gorongosa National Park, Mozambique

Emanuele Biggi / Great Fen / Raft spider (Dolomedes plantarius), adult female eating an invasive species of fish, Western mosquitofish, (Gambusia affinis), Alessandria, Italy, August.

James Dunbar / Male Nursery web spider (Pisaura mirabilis) wrapping up prey, UK. Captive.

James Dunbar / Close-up of a pair of Nursery web spiders (Pisaura mirabilis) mating, UK. Captive.

Bernard Castelein / Raft spider (Dolomedes fimbriatus) on Tansy (Tanacetum vulgare), Klein Schietveld, Brasschaat, Belgium August

Jim Brandenburg / Fishing Spider (Pisauridae) pair on moss, Minnesota

Alex Hyde / Raft Spider (Dolomedes fimbriatus) female on heathland pool. Note wing of predated damselfly floating on water's surface under the spider. Dorset, UK. August.

Alex Hyde / Fen raft spider / Great raft spider (Dolomedes plantarius) adult female. Norfolk Broads, UK, September. Vulnerable species.

Bernard Castelein / Nursery web spider (Pisaura mirabilis) female with egg sac, Peerdsbos, Brasschaat, Belgium. July

Bernard Castelein / Nursery web spider (Pisaura mirabilis) female guarding spiderlings, Peerdsbos, Brasschaat, Belgium. July

Bernard Castelein / Nursery web spider (Pisaura mirabilis) female guarding spiderlings, Peerdsbos, Brasschaat, Belgium. July

Nick Upton / Young female Nursery web spider (Pisaura mirabilis) sun basking on a leaf on a late winter day, Wiltshire garden, UK, February.

Nick Upton / Juvenile Nursery web spider (Pisaura mirabilis) positioning itself to sun on a Honeysuckle (Lonicera) leaf in a garden, Wiltshire, England, UK, February.

Emanuele Biggi / Fishing spider (Thaumasia sp.) adult female eating a tadpole, Los Amigos Biological Station, Madre de Dios, Amazonia, Peru.

Will Watson / Raft spider (Dolomedes fimbriatus) on Sphagnum, County Kerry, Republic of Ireland. June.

Will Watson / Raft spider (Dolomedes fimbriatus) on Sphagnum, Whixall Moss, Fenn's, Whixall and Bettisfield Mosses National Nature Reserve, Shropshire, England, UK. June.

Bernard Castelein / Nursery web spider (Pisaura mirabilis),Brasschaat, Belgium. July

Bernard Castelein / Nursery web spider (Pisaura mirabilis), female looking after spiderlings, Brasschaat, Belgium, July.. July

Bernard Castelein / Nursery web spider (Pisaura mirabilis), female looking after spiderlings, Brasschaat, Belgium. June

Bernard Castelein / Raft spider (Dolomedes fimbriatus), Klein Schietveld, Brasschaat, Belgium. August

Emanuele Biggi / Great Fen / Raft spider (Dolomedes plantarius), adult female holding egg sac, Alessandria, Italy. September.

Emanuele Biggi / Great or Fen Raft spider (Dolomedes plantarius), adult female hunting from aquatic vegetation, Po river, Alessandria, Italy, August.

Emanuele Biggi / Great raft spider (Dolomedes plantarius) young individual, Alessandria, Italy, May.

Emanuele Biggi / Fen raft spider (Dolomedes plantarius) female protecting her spiderlings in her nursery web, Italy.

Emanuele Biggi / Great Fen / Raft spider (Dolomedes plantarius), spiderlings on their nursery web, Alessandria, Italy, August.

Emanuele Biggi / Great or Fen Raft spider (Dolomedes plantarius), sub-adult eating a Wolf-spider (Pirata sp.), Alessandria, Italy, August.

Doug Wechsler / Fishing spider (Dolomedes tenebrosus) hiding in log, Wissahickon Valley Park, Pennsylvania, USA, June.

Jussi Murtosaari / Raft spider (Dolomedes fimbriatus), female with egg sac, Finland, August.

Chris Mattison / Nursery web spider (Pisaura mirabilis) guarding nest of spiderlings. Tintern, Monmouthshire, Wales, June.

Chris Mattison / Nursery web spider (Pisaura mirabilis) guarding nest of spiderlings. Tintern, Monmouthshire, Wales, June.

Chris Mattison / Nursery web spider (Pisaura mirabilis) guarding nest of spiderlings. Tintern, Monmouthshire, Wales, June. Focus-stacked image.

Paul Bertner / Fishing Spider (Pisauridae) with dragonfly prey, Udzungwa Mountains National Park, Tanzania

James Dunbar / Male Nursery web spider (Pisaura mirabilis) wrapping up prey, UK. Captive.

James Dunbar / Male Nursery web spider (Pisaura mirabilis) offering a nupital gift to a female, UK. Captive.

James Dunbar / Pair of Nursery web spiders (Pisaura mirabilis) preparing to mate, UK. Captive.

James Dunbar / Male Nursery web spider (Pisaura mirabilis) picking up a fly wrapped in silk, UK. Captive.

James Dunbar / Close up of a Nursery web spider (Pisaura mirabilis) grooming , UK. Captive.

James Dunbar / Pair of Nursery web spiders (Pisaura mirabilis) feeding together, preparing to mate, UK. Captive.

James Dunbar / Female Nursery web spider (Pisaura mirabilis) accepting nupital gift from mate, UK. Captive.

Alex Hyde / Fen raft spider / Great raft spider (Dolomedes plantarius) adult female. Norfolk Broads, UK, September. Vulnerable species.

Alex Hyde / Fen raft spider / Great raft spider (Dolomedes plantarius) sub-adult. Norfolk Broads, UK, September. Vulnerable species.

Alex Hyde / Fen raft spider / Great raft spider (Dolomedes plantarius) sub-adult feeding on water beetle. Norfolk Broads, UK, September. Vulnerable species.

Alex Hyde / Habitat of the Fen raft spider / Great raft spider (Dolomedes plantarius) Norfolk Broads, UK, September. Vulnerable species.

Alex Hyde / Fen raft spider / Great raft spider (Dolomedes plantarius) sub-adult. Norfolk Broads, UK, September. Vulnerable species.

Alex Hyde / Habitat of the Fen raft spider / Great raft spider (Dolomedes plantarius) Norfolk Broads, UK, September.

Alex Hyde / Fen raft spider / Great raft spider (Dolomedes plantarius) female guarding nursery web. Norfolk Broads, UK, September. Vulnerable species.

Alex Hyde / Fen raft spider / Great raft spider (Dolomedes plantarius) sub-adult. Norfolk Broads, UK, September. Vulnerable species.

Alex Hyde / Fen raft spider / Great raft spider (Dolomedes plantarius) sub-adult. Norfolk Broads, UK, September. Vulnerable species.

Alex Hyde / Fen raft spider / Great raft spider (Dolomedes plantarius) sub-adult. Norfolk Broads, UK, September. Vulnerable species.

Alex Hyde / Fen raft spider / Great raft spider (Dolomedes plantarius) sub-adult. Norfolk Broads, UK, September. Vulnerable species.

Alex Hyde / Fen raft spider / Great raft spider (Dolomedes plantarius) female guarding nursery web. Norfolk Broads, UK, September. Vulnerable species.

Kim Taylor / Raft spider (Dolomedes fimbriatus) female feeding on drowned dragonfly. Surrey, England, September.

Kim Taylor / Raft spider (Dolomedes fimbriatus) female feeding on drowned dragonfly. Surrey, England, September.

Kim Taylor / Raft spider (Dolomedes fimbriatus) female on leaf (Potamogeton sp) Surrey, England, September.

Paul Harcourt Davies / Nursery web Spider (Pisaura mirabilis) guarding cocoon and recently hatched spiderlings. Podere Montecucco, Orvieto, Umbria, Italy, June.

Paul Harcourt Davies / Nursery web spider (Pisaura mirabilis) guarding egg cocoon. Torrealfina, Orvieto, Italy, May.

Andy Sands / Nursery web spider (Pisaura mirabilis) female carrying egg sack, Oxfordshire, England, UK, June

Lorraine Bennery / Nursery web spider (Pisaura mirabilis) female with egg cocoon, Fontainebleau forest, France, July.

Nick Garbutt / Raft spider (Dolomedes fimbriatus) resting on water's surface. Nordtirol, Tirol, Austian Alps, Austria. July.

Bernard Castelein / Raft spider (Dolomedes fimbriatus) on Tansy (Tanacetum vulgare), Klein Schietveld, Brasschaat, Belgium August

Rod Williams / Nursery web spider (Pisaura mirabilis) male, Brockley Cemetery, Lewisham, London. May.

Andy Sands / Raft spider (Dolomedes fimbriatus) out of water resting on old heather stem, Surrey, England, UK, July

Stephen Dalton / Hunting spider (Pisaura mirabilis) guarding nursery web, Sussex, UK

Stephen Dalton / Hunting spider (Pisaura mirabilis) on web in rain, Sussex, UK

Alex Hyde / Raft Spider (Dolomedes fimbriatus) male resting on the surface of a moorland pool. Nordtirol, Austrian Alps, June.

Alex Hyde / Raft Spider (Dolomedes fimbriatus) male resting on the surface of a moorland pool. Nordtirol, Austrian Alps, June.

Alex Hyde / Raft Spider (Dolomedes fimbriatus) male resting on the surface of a moorland pool. Nordtirol, Austrian Alps, June.

Alex Hyde / Raft Spider (Dolomedes fimbriatus) female resting on the surface of a moorland pool among stems of Horsetail (Equisetum sp.). Nordtirol, Austrian Alps, June.

Alex Hyde / Raft Spider (Dolomedes fimbriatus) female resting on the surface of a moorland pool. Nordtirol, Austrian Alps, June.

Alex Hyde / Raft Spider (Dolomedes fimbriatus) female resting on the surface of a moorland pool, photographed with a fisheye lens to show surrounding habitat. Nordtirol, Austrian Alps, June.

Alex Hyde / Raft Spider (Dolomedes fimbriatus) female resting on the surface of a moorland pool, photographed with a fisheye lens to show surrounding habitat. Nordtirol, Austrian Alps, June.

Alex Hyde / Raft Spider (Dolomedes fimbriatus) female resting on the surface of a moorland pool, photographed with a fisheye lens to show surrounding habitat. Nordtirol, Austrian Alps, June.

Alex Hyde / Raft Spider (Dolomedes fimbriatus) juvenile female resting on the surface of a moorland pool. Nordtirol, Austrian Alps, June.

Chien Lee / Fishing Spider (Dolomedes sp) feeding on Pond Skater (Gerridae) prey, Nabire, Papua, Indonesia

Jussi Murtosaari / Raft spider (Dolomedes fimbriatus), female carrying egg sac, Toivakka, Finland, August.

MYN / Niall Benvie / Raft spider (Dolomedes fimbriatus) Burgundy. France, April.

Alex Hyde / Raft Spider (Dolomedes fimbriatus) female on heathland pool. Note wing of predated damselfly floating on water's surface under the spider. Dorset, UK. August.

Alex Hyde / Raft Spider (Dolomedes fimbriatus) female on heathland pool. Note wing of predated damselfly floating on water's surface under the spider. Dorset, UK. August.

Alex Hyde / Raft spider (Dolomedes fimbriatus) female on Heathland pool, Surrey, UK. October.

Alex Hyde / Raft spider (Dolomedes fimbriatus) female on Heathland pool, Surrey, UK. October. The multicoloured film results from chemoautotrophic bacteria that oxidise iron and manganese ions in the water, with...

Bernard Castelein / Nursery web spider (Pisaura mirabilis) carrying eggs, Brasschaat, Belgium, June.

Chris Mattison / Raft spider (Dolomedes fimbriatus) eating tadpole. Roudsea Woods, Cumbria, England, UK, May.

Chris Mattison / Raft spider (Dolomedes sp) Danum Valley, Borneo.

Konrad Wothe / Fishing Spider (Pisauridae) in web, Panguana Nature Reserve, Peru

Alex Hyde / Fen raft spider / Great raft spider (Dolomedes plantarius) female guarding nursery web. Norfolk Broads, UK, September. Vulnerable species.

Alex Hyde / Fen raft spider / Great raft spider (Dolomedes plantarius) sub-adult. Norfolk Broads, UK, September. Vulnerable species.

Rod Williams / Nursery-web Spiders (Pisaura mirabilis) Brockley cemetery, Lewisham, London, England, UK. April

MYN / Marko Masterl / Cabbage thistle (Cirsium oleraceum) in flower and Nursery web spider (Pisaura mirabilis), Slovenia, Europe, November. meetyourneighbours.net project

MYN / Marko Masterl / Nursery web spider (Pisaura mirabilis), Slovenia, Europe, March. meetyourneighbours.net project

MYN / Marko Masterl / Nursery web spider (Pisaura mirabilis), Slovenia, Europe, March. meetyourneighbours.net project

MYN / Marko Masterl / Nursery web spider (Pisaura mirabilis), Slovenia, Europe, March. meetyourneighbours.net project

MYN / Tim Hunt / Nursery web spider (Pisaura mirabilis) on stinging nettle (Urtica dioica) Barnt Green, Worcestershire, UK, July. meetyourneighbours.net project

Alex Hyde / Nursery Web Spider (Pisaura mirabilis) mother on nursery web with newly emerged spiderlings. Peak District National Park, Derbyshire. UK. July.

Alex Hyde / Nursery Web Spider (Pisaura mirabilis) female carrying egg sac, against a white background. Peak District National Park, Derbyshire, UK. June.

Alex Hyde / Nursery Web Spider (Pisaura mirabilis) mother on nursery web with newly emerged spiderlings. Peak District National Park, Derbyshire. UK. July.

Alex Hyde / Nursery Web Spider (Pisaura mirabilis) mother in nursery web in meadow, with the spherical egg mass that she is guarding visible. Peak District National Park, Derbyshire. UK. August.