"Bait ball" refers to a group of small fish or other marine creatures that come together in a tightly-packed formation for protection against predators. Full definition
Another of the area's unique diving adventures takes place in spring, when schooling sardines attract sailfish, giving divers a rare opportunity to swim into huge bait balls of these tiny fish while spindle - nosed sailfish circle and slash through the schools. (caradonna.com)
The Sardine Run is a huge bait ball of hundreds of thousands of tiny sardines, that congregate in one enormous school, and swim in synch together. (adventureinyou.com)
Around the Plumper Islands a big bait ball attracted the attention of a flock... Continue reading → (stubbs-island.com)