A migrant from India is helping to keep swimmers safer, with a service that sends alerts about shark activity.
Helping people to avoid contact with sharks is one reason Vasavada developed SharkSmart, after migrating from India as a student in 1999. Like many migrants, Vasavada remains cautious about Australia's powerful marine predators.
"People have a natural fear of sharks, and as somebody who migrated to Australia, I look at the water and I think there must be sharks out here," he says. "Of course, when you are living overseas people are always talking about sharks in Australia, as well."