Pollock (scientific name: *Gadus chalcogrammus*) are fish that move like most other fish, using their fins and tails to propel themselves through the water.
Here's how they move:
* Tail: They use their powerful tails to generate thrust. The tail fin sweeps back and forth, creating waves in the water that push the fish forward.
* Dorsal and Anal Fins: These fins help with stability and maneuvering. They can be adjusted to help the fish change direction and maintain balance.
* Pectoral Fins: These fins near the head are like "wings" and can be used for braking, turning, and even hovering in place.
* Pelvic Fins: These smaller fins located near the belly help with balance and maneuvering.
Pollock are primarily bottom feeders and use their fins to move efficiently along the ocean floor in search of food.