Chien Lee / Giant Crab Spider (Sparassidae) feeding on tree frog prey, Digul River, Papua, Indonesia

Chien Lee / Giant Crab Spider (Sparassidae) feeding on young Peacock Day Gecko (Phelsuma quadriocellata), Madagascar

Paul Bertner / Giant Crab Spider (Sparassidae) juvenile, Hitoy Cerere Biological Reserve, Costa Rica

Paul Bertner / Giant Crab Spider (Sparassidae) mother with spiderlings, Udzungwa Mountains National Park, Tanzania

Paul Bertner / Crab Spider (Thomisidae) with Ant (Tetraponera sp) prey, Udzungwa Mountains National Park, Tanzania

Peter Schwarz/ BIA / Yellow Crab Spider (Thomisus onustus) camouflaged on flower, Dalmatia, Croatia

Laurent Geslin / Female Common crab spider (Xysticus cristatus) feeding on fly in garden, UK

Juergen Freund / Horsehoe crab (Tachypleus gigas) swimming on its back with gills creating the propulsion, Palawan, Philippines. Did you know? Horseshoe crabs are more closely related to spiders than crabs.

Chris Shields / Illustration of crab spider (Thanatus striatus) Philodromidae,.

Michael Quinton / Crab Spider (Diaea dorsata) camouflaged on yellow flower, Alaska

Paul Harcourt Davies / Goldenrod crab spider (Misumena vatia) female alert for prey on a flower, Italy

Wild Wonders of Europe / della Ferrera / Crab spider (probably Thomisus onustus) preying on a Bush cricket (Tettigoniidae) on Musk thistle flower (Carduus nutans / macrocephalus) near Skrka lake, Hutovo Blato Nature Park, Bosnia and Herzegov...