5 TI is clearly helpful to orcas, but the benefit to sharks is less certain. It may be a way for sharks to
defend themselves. However, the advantage of being able to "play dead" is not clear. Whatever the use
for sharks, orcas are known to use TI for their own ends. The sharks also learn, however. Sightings of
great whites off the South African coast went down while orcas were in the area. Once the orcas left, the
great whites began to return.
Paraphrasing
