If this whale joined the feeding group, what was to prevent another? And another? I had experienced bubble net feeding, but something inside me knew this was about to be different from anything I had ever seen. This time, I may finally witness a group of 10 or more whales working together to feed using one of the animal kingdom’s most extraordinary, powerful, and graceful strategies.

To understand the threat of ship strikes for marine predators such as whales, quantitative tools are needed that measure specific impacts without ignoring the many uncertain and stochastic elements of whale-vessel interactions. We developed a tool that focuses on one particularly complex aspect of the ship-strike problem: the encounter rate, the fraction of co-occurrences (i.e., times that whales and vessels occur within the same 1-km2) that result in an imminent collision.

With eyes watching this group’s behaviour from land, from the water, from an aerial perspective through the drone, and a hydrophone listening underwater, we remained focused and curious as to what these whales were doing. After another 30 minutes, all the whales began to travel towards shore and became incredibly surface active. Breaching, tail slapping, and spyhopping! Behaviours commonly observed following a successful hunt.