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.