Here are some of our favorite identification guides!
Florida Common Wildlife - Florida Fish and Wildlife Conservation Commission (FWC) 
Plants
Florida Mangrove Identification - Florida Museum
South Florida Native Plants - Fairchild Tropical Botanical Garden
Reptiles
Native vs Nonnative Snakes and Lizards of South Florida - University of Florida
Anole Lizards of Miami - University of Rhode Island
South Florida Snakes - UF Department of Wildlife Ecology and Conservation
Nonnative Reptiles of South Florida - UF IFAS Extension
Insects
100 Common Florida Insects
Moths of South Florida - Fairchild Tropical Botanical Garden
Marine Animals
Marine Invertebrates (Urchins, Snails, Worms, Anemones, Slugs, etc) - FWC
Photo Guide to South Florida Reef Corals - Reef Guide
Shark Identification - National Oceanic and Atmospheric Administration (NOAA)
Reef Fish Identification Guide - FWC

Have an identification guide you think we should feature? Send us an email at conservation@frostscience.org