What is whales in spongebob?

There are multiple instances of whales appearing in SpongeBob SquarePants, with varying levels of significance to the plot. Here are a few examples:

• In the episode "Bubblestand," SpongeBob and Patrick create a bubble-blowing technique that attracts a whale. The whale repeatedly swallows the bubbles, only to burp them out in an impressive display. Eventually, the whale tires of the game and swims away.
• In "Ripped Pants," SpongeBob pretends to be a rockstar to impress Sandy. At one point, he sings a ballad to a whale that is passing by. However, the whale doesn't seem very impressed and simply continues swimming.
• In "Squid on Strike," SpongeBob and Squidward go on strike and refuse to work at the Krusty Krab. Mr. Krabs responds by hiring three whales to perform their duties instead. The whales are shown cooking patties, cleaning the restroom, and even serving food to customers. However, they ultimately cause chaos and destruction and are fired.
• The most prominent whale character in SpongeBob SquarePants is Pearl, Mr. Krabs' daughter. Pearl is a teenage whale who is portrayed as enthusiastic, outgoing, and somewhat bratty. She often appears in episodes that involve Mr. Krabs' attempts to bond with or impress her, as well as episodes where SpongeBob interacts with her directly.