Lack Of Shade
Sea Life Park has been cited multiple times by USDA's APHIS for lack of sun coverage but many of their animals continue to live without adequate shade.
Multiple dolphins have cataracts and Sea Life Park employees tell guests that, although almost all of their sea lions are now blind, it's extremely common in the wild as well.
Unlike wild dolphins, captive dolphins can suffer from too much sun exposure. This is because they spend much more time at the surface than they do in the wild. Zinc oxide is put on some animals held in dolphinariums but usually not ones on display.
This has been an issue at the park for some time, with APHIS Inspections noting in 1994 that an adult bottlenose dolphin named Amiko, "was observed stationing for prolonged periods of time, because he was not submerging often enough to keep his melon wet, he had become quite sunburned just rostral to his blowhole- resulting in areas of peeling skin."
You can read more about that here:
Has Been Observed Having Too Many Customers Per Dolphin In Swim-With-Dolphin Programs
Tank Cleanliness And Rust
Tank conditions at Sea Life Park vary greatly depending on how much they are cleaned. They appear to be frequently neglected and many have developed rust. Green algae is sometimes heavily covering the surface of many of the exhibits' tanks. This is due to excess nitrogen in the water caused by poor filtration of the animal feces. They've been noted for poor water quality before in 2000 by APHIS who stated, "water quality records continue to show sporadic brief instances of unacceptably high coliform levels... the fact that these unexplained episodes of high coliform levels continue to occur indicates that there may be a system-wide problem which needs to be addressed."