Who said "I am a creature of pure, undiluted instinct."?

This quote is attributed to The Shark.

I am a creature of pure, undiluted instinct. - The Shark

"I am a creature of pure, undiluted instinct."

The Shark Nature

"Farewell and adieu to you fair Spanish ladies."

"You're gonna need a bigger boat."

"I am a thing that does not think, only hunt and eat."

"The ocean is my domain, my kingdom of hunger."

"Nature teaches us about beauty."

"Nature teaches us patience and wisdom"

"Sometimes it snows in April."

"Every town has a soul, and Twin Peaks has a troubled one."