Brynn Metheny's The Morae River is a fascinating exercise in ecological worldbuilding. She populates her alien world with strange and unusual creatures, from man-sized rodents to towering, tentacled arthopods.

Metheny includes details about the biology and behavior of her alien species, as well as the ecology of the fictional Morae River region. In addition to the The Morae River blog, she has also published a book exploring the imaginary ecosystem.

[The Morae River via lines and colors]

Gigantic Fleas and Killer Fish Wait on an Alien World

The Gigatus

Gigantic Fleas and Killer Fish Wait on an Alien World

The Sabulo

Gigantic Fleas and Killer Fish Wait on an Alien World

The Blue -Throated Hulompolus

Gigantic Fleas and Killer Fish Wait on an Alien World

The Balandic Cula

Gigantic Fleas and Killer Fish Wait on an Alien World

The Spotted Bufodd

Gigantic Fleas and Killer Fish Wait on an Alien World

The Greater Fugamus

Gigantic Fleas and Killer Fish Wait on an Alien World

The Red Tailed Mardik

Gigantic Fleas and Killer Fish Wait on an Alien World

The Banded Terrinsc

Gigantic Fleas and Killer Fish Wait on an Alien World

The Mountain Uru