Certain species are very rarely seen by divers and scientists alike, this may be due to their very specific environmental requirements, highly cryptic colouration, a restricted geographic range or other more subtle reasons.

Environmental Requirements
Hairy variation of the striped Frogfish only exists around filamentous algae and soft corals.
Toadfish often found around piers such as the navy pier of Exmouth Western Australia.

Cryptic Colouration
Sponge Shrimp – Gelastocaris paronae
Lobiger souverbii
Juvenile Painted Frogfish

Restricted Geographic Range
Unknown Species of Torpedo Ray from Nusa Kode, Komodo National Park.
Raja Epaulette Shark endemic to Raja Ampat islands Irian Jaya, Indonesia.