Presumably that's one of the listed features?
I do think it would be in the zoo’s best interests to try and apply for an exception in that case then. It’s nice to see it on there for historical reasons, but it causes an unavoidable loop of confusion:
1. New/Unfamiliar visitor sees the words “Penguin Pool”
2. They go over to look for the penguins, and of course see none
3. They spend time looking for them, thinking they must be inside or something, until they eventually find the panel mentioning its disuse (or just walk off disappointed)
This isn’t the zoo’s fault, but it’s an inevitability given it advertises itself for something it no longer provides. The closure of the African Aviary route also means guests are slightly less likely to find Penguin Beach before it, and it is entirely possible to stumble across the pool without knowing it’s disused. It’s why the zoo abandoned the name “Elephant House” for the Casson Pavilion once the elephants left, because if that was in big letters outside it would inevitably lead to disappointment.
The only real solution is to implement large signs highlighting where the penguins are now, but there may still be a level of confusion. The pool is presumably going to have the title for the foreseeable future, unless the zoo can cover it with cladding that says “Lubetkin Pool” or something similar to “The Cassons”.