Reptiles
There are several reptile species of conservation significance, including snakes such as the Peninsula Brown Snake, Pseudonaja inframacula; Bardick, Echiopsis curta; Master's Snake, Drysdalia mastersii; and Common Death Adder, Acanthophis antarcticus. There are numerous lizards, including, Worm Lizards; Snake-Lizards; Shingleback (Sleepy Lizard), Tiliqua rugosa; Ctenotus Skinks; Lerista Skinks; Mallee Tree Dragon, Amphibolurus norrisi; Painted Dragon, Ctenophorus reticulates; Sand Goanna, Varanus gouldii; Marbled Gecko, Christinus marmoratus; Western Stone Gecko, Diplodactylus granariensis; Thick-tailed Gecko (Barking Gecko), Underwoodisaurus milii; and Starred Knob-tailed Gecko, Nephrurus stellatus.
Small Mammals
There are some small mammals of conservation significance, including Fat-tailed Dunnart,
Sminthopsis crassicaudata; Mitchell's Hopping Mouse,
Notomys mitchellii; Brush-tailed Bettong,
Bettongia penicillata; Western Pygmy-possum,
Cercartetus concinnus; Chocolate Wattled Bat,
Chalinolobus morio; and Southern Forest Bat,
Vespadelus regulus.
Migratory Shorebirds and Waterbirds
There are several species of migratory shorebirds and waterbirds which are significant, including Hooded Plover,
Thinornis rubricollis; Fairy Tern,
Sterna nereis; Sooty Oystercatcher,
Haematopus fuliginosus; Pied Oystercatcher,
Haematopus longirostrus; Banded Stilt,
Cladorhynchus leucocephalus; Red-necked Avocet,
Recurvirostra novaehollandiae; Sanderling,
Calidris alba; Ruddy Turnstone,
Arenaria interpres; Australasian Grebe (Little Grebe),
Tachybaptus novaehollandiae; and Eastern Curlew,
Numenius madagascariensis.
Other significant birds found in the Chain of Bays include, Peregrine Falcon, Falco peregrines; Rock Parrot, Neophema petrophila; Australian Ringneck (Ring-necked Parrot), Barnardius zonarius; and Blue-breasted Fairy-Wren, Malurus pulcherrimus.