Biology is my lifelong love and undergrad degree. I'm also particularly fond of Australia and the American mid/southwest. Someday I'll move to SA and farm potoroos, but in the meantime I'm a freelance scientific illustrator based in California.
I'm only just starting to get into arthropods and fungi, so ID help there is especially welcome.
Some favorite identification sources (and always looking for more if anyone has recommendations):
The Jepson Manual: Higher Plants of California
USDA Plants Database (http://plants.usda.gov/java/)
The Sibley Guide to Birds [North America]
Kaufman Field Guide to Mammals of North America
www.californiaherps.com
Hawai'i's Sea Creatures (Hoover)
The Ultimate Guide to Hawai'ian Reef Fishes (Hoover)
Reef Coral/Creature/Fish Identification: Florida Caribbean Bahamas (Humann & DeLoach)
A Complete Guide to Reptiles of Australia (Wilson & Swan)
The Field Guide to the Birds of Australia (Pizzey & Knight)
Mammals of Australia (Strahan)
FloraBase: Western Australian Flora (http://florabase.dec.wa.gov.au/)
PlantNET: NSW FloraOnline (http://plantnet.rbgsyd.nsw.gov.au/trad_keys.htm)
Collins/Princeton Birds of Europe (Svensson, Mullarney, & Zetterstrom)

