Pete Oxford / Tailless Whip Scorpion, Yasuni National Park, Amazon Rainforest, Ecuador

Piotr Naskrecki / Whip Scorpion (Phrynus goesii), Saba, West Indies, Caribbean

Juergen Freund / Spider crab (Xenocarcinus tuberculatus) on whip coral. North Raja Ampat, West Papua, Indonesia

Pete Oxford / Tailless Whip Scorpion (Heterophrynus sp), Mapari, Rupununi, Guyana

Pete Oxford / Tailless Whip Scorpion (Heterophrynus sp), Mapari, Rupununi, Guyana

Pete Oxford / Tailless Whip Scorpion (Heterophrynus sp), Mapari, Rupununi, Guyana

Murray Cooper / Whip Spider showing spiky pedipalps, Amazon, Ecuador

James Christensen / Tailless Whip Scorpion (Phrynus gervaisii) showing spiky pedipalps, Colon, Panama

Thomas Marent / Whip Spider showing spiky pedipalps, Allpahuayo Mishana National Reserve, Peru

Thomas Marent / Whip Spider showing spiky pedipalps, Allpahuayo Mishana National Reserve, Peru

Thomas Marent / Whip Spider (Phrynidae), Braulio Carrillo National Park, Costa Rica

Thomas Marent / Whip Spider (Phrynidae) on moss-covered tree, Braulio Carrillo National Park, Costa Rica

Juergen Freund / Spider crab / Mickey mouse crab {Xenocarcinus tuberculatus} camouflaged on whip coral, Indo Pacific

PREMAPHOTOS / Whip-scorpion / whip-spider (Paraphrynus sp} feeding on a cockroach at night in rainforest, Costa Rica

Piotr Naskrecki / Tailless Whip Scorpion (Heterophrynus sp) female showing spiky pedipalps, Guyana

Piotr Naskrecki / Tailless Whip Scorpion (Heterophrynus sp) male showing spiky pedipalps, Guyana

Piotr Naskrecki / Tailless Whip Scorpion (Heterophrynus sp) male showing spiky pedipalps, Guyana

Chris Newbert / Xeno Crab (Xenocarcinus tuberculatus) on Wire Coral (Cirrhipathes sp) 70 feet deep, Papua New Guinea

Piotr Naskrecki / Whip Scorpion (Phrynus parvulus) young safe on their mother's back, stay with her until they are ready to feed on their own, Costa Rica

Piotr Naskrecki / Whip Scorpion (Phrynus parvulus) just molted, will be vulnerable for a few hours until cuticle hardens, Costa Rica

Piotr Naskrecki / Whip Scorpion (Phrynus parvulus) two males in territorial combat on a tree trunk in the lowland Atlantic rainforest of Costa Rica

Michael & Patricia Fogden / Tailless Whip Scorpion adult with young on back in the Amazon rainforest, Peru

James Christensen / Tailless Whip Scorpion (Heterophrynus armiger), Mindo, western slope of Andes, Ecuador

Chien Lee / Tailless Whip Scorpion from a limestone cave in Gunung Mulu National Park, Malaysia