There are a few attempts at humor here, but the writing never reaches the lofty heights of the first Sharknado. Clearly that was the goal here. Still, the humor helps make what is otherwise a dull slog watchable, at least most of the time. I personally wouldn't trust The Asylum to do anything right, but someone granted them access to an actual aquarium stocked with live animals. Some of the behind the scenes shots were interesting in their own right.
The acting is standard Asylum "Attention Walmart shoppers: The Asylum is casting a movie in the parking lot. Parts go to first twenty shoppers to sign up. Attention Walmart shoppers..." With the exception of the short-haired blonde scientist. Words cannot describe her performance. They coukd make a film about how she appeared in front of the camera yet never realized she was supposed to be acting.
Speaking of camera, the camera work was uncommonly good for an Asylum effort. There were times you could almost follow the action. Almost. There's the usual special effects paid for with free pizza, dearth of appropriate background music, bizarrely disjointed foley work, and dialog that would be improved by having five year olds ad lib instead.
Half a star compared to professionally made films. For an Asylum film half a star is five stars. Average. Five stars.