Fibonacci Day (1, 1, 2, 3) honors the medieval Italian mathematician Leonardo Bonacci, who was also known as Leonardo of Pisa and Leonardo Fibonacci. The talented number theorist introduced the world to mathematical concepts, such as the Arabic numbering system and Fibonacci number sequencing. The Fibonacci sequence—a sequence in which each number is the sum of the two preceding ones—is often represented as a spiral known as the golden ratio. The golden spiral corresponds to numerous features an

Drone footage of hunting whales shows an example of the Fibonacci spiral occurring in nature, where the two whales can be seen working together to create a bubble net surrounding fish. 🐋💦 Bubble-net feeding is usually observed in groups of four or five humpback whales, where the whales dive down several hundred feet, releasing a stream of air bubbles in a spiral pattern “at a precise moment and in an exact sequence," according to research. | ABC7