Swimming

Jamaican Iguana

Jamaica's "Lazarus" Rock Iguana

Sehuencas Water Frog

Bolivia's stream sentinel

Stoplight Loosejaw

The deep sea's red-light hunter

Javan Leopard

Java's hidden rosettes in the mist

Amano Shrimp

Algae patrol with a secret sea stage

Ocean Whitefish

A tilefish by blood, a whitefish by name

Ostracod

Tiny shells, huge history

Knifefish

Life in South America, powered by volts

Kaluga Sturgeon

Giant hunter of the Amur

Dimetrodon

Permian sailback-before dinosaurs

Eryops

Permian powerhouse of the ponds

Deinocheirus

The terrible-handed wetland omnivore

Haikouichthys

A tiny fossil at vertebrates' dawn

Ornithocheirus

Bird-hand ruler of Cretaceous skies

Purussaurus

Miocene mega-caiman of South America

Allosaurus

Jurassic hunter of the Morrison

Lystrosaurus

The beaked survivor of Earth's worst crisis

Vegavis

A polar clue to waterfowl origins

Scutosaurus

Permian armor, plant-powered

Palaeoloxodon namadicus

The giant straight-tusked titan of Ice-Age India

Dunkleosteus

Armor-plated apex of Devonian seas

Helicoprion

Permian seas' spiral-toothed slicer

Xiphactinus

Not a dinosaur-Cretaceous sea predator

Teddy Guinea Pig

Plush coat, big squeaks, gentle charm.