What is found traveling with schools of tuna?

Traveling with schools of tuna, one can often find various species of fish such as mackerel and bonito, as well as larger predators like sharks and dolphins. These accompanying fish benefit from the protection offered by the tuna and may also feed on smaller prey stirred up by the tuna's movements. Additionally, seabirds may be seen above, taking advantage of the feeding frenzy created by the tuna below.