A website documenting photos of various breeds of peafowl in various states and at different ages, collected from farms and peafowl breeders.
A website documenting Jim Anderson's nudibranch photography. Contains hundreds upon hundreds of images with species names listed for each. Sorted by region. While the main focus is sea slugs, there are also pages for fish, crustaceans, seahorses, flatworms, and mollusks.
A blog focusing on the philosophy of paleontology. No paywalls. Started by one of my professors to provide free access to academic thought. It's not exactly a database, but I am promoting it here anyways and you can't do anything about it.
A blinkie generator with 250+ templates.