Complex sentence: In Hawaii, some mantis shrimp have grown unusually large in the very dirty water of the Grand Ala Wai Canal in Waikiki, however the usual dangers associated with consuming seafood caught in contaminated waters still applies to mantis shrimp.
Split into simpler sentences: In Hawaii, some mantis shrimp have grown unusually large in the very dirty water of the Grand Ala Wai Canal in Waikiki. The usual dangers associated with consuming seafood caught in contaminated waters still applies to mantis shrimp.