I believe the Fish ID experience was one of the more valuable portions of my AOW experience. IT had a great impact on my future diving experiences.There are some Adventure Dives that IMO are an exception to the valuable training experience, such as fish ID
Research has shown that the ability to identify something by name has a huge impact on memory. People who do dives without the ability to identify the ocean life they see by name finish the dive with a memory of seeing fish. People who can identify them by name end the dive with a memory of specific fish at specific moments.
They also learn more than names, especially as knowledge grows on subsequent dives. They see a certain fish darting about erratically and know that it is a sergeant major protecting its eggs, and the eggs are the purple patch behind it. A diver getting attacked by a tiny little fish understands that the damsel fish is protecting its patch of algae. That fish in the tail-down position is preparing to be cleaned by cleaner wrasse.
It changes the nature of the entire dive.