A shark was seen in the waters off Nusa Dua last week. And according to Bali’s marine authorities, that is not a problem. It is proof the ecosystem is working.
“There is a shark, the waters are not bad,” said I Nengah Bagus Sugiarta, head of the marine division at Bali’s Marine and Fisheries Agency, on Monday, May 25, 2026. “If there is a top predator, it means the food pyramid exists. The food chain exists.”
The shark was spotted on Friday, May 22, near The Nusa Dua beach area — a stretch of coastline known for its luxury hotels, calm waters, and international tourists. A video of the sighting circulated over the weekend, prompting questions about safety.
Sugiarta’s answer was unexpected. He said the presence of an apex predator actually indicates healthy coral reefs and a balanced marine ecosystem.
“Rather than having no sharks, what would develop are herbivorous fish,” he explained. “The question is why it came here. That needs to be researched.”
Why the Shark Came
Sugiarta offered several possibilities.
The shark may have been hunting. Tuna populations are significant in Bali’s southern waters, and sharks follow their food. The southern coast of Bali is also a migration route for larger marine animals, including sharks and whales.
Alternatively, the shark’s habitat may have been disturbed, or it may simply have been searching for food near shore.
What Sugiarta does not yet know is whether this particular species typically ventures so close to the beach. That, he said, is a question for researchers from Udayana University or the National Research and Innovation Agency (BRIN).
“If from the beginning there were no sharks, and suddenly there are, that needs to be studied,” he said.
What This Means for Swimmers
Sugiarta acknowledged that tourist safety must be considered. He reminded beachgoers to remain cautious — but he also pushed back against the instinct to fear sharks.
“Sharks should not always be seen as frightening animals,” he said. “There are many tourist attractions that offer swimming with sharks.”
The difference, of course, is that those attractions operate in controlled environments. Nusa Dua is not a controlled environment. It is the open ocean.
The ITDC, the state-owned corporation that manages The Nusa Dua area, has sought to calm public concerns. I Made Agus Dwiatmika, general manager of The Nusa Dua, said on Sunday that the situation remains safe.
“Until now, our security team in the field has not found any situation that has caused panic or disturbing reports from the public or tourists,” he said.
A Balanced View
Sugiarta’s message was clear: a single shark sighting does not mean Bali’s waters are dangerous. It means they are healthy.
But he also stopped short of dismissing the sighting entirely. More research is needed, he said, to understand why the shark appeared and whether similar sightings could become more common.
For now, the beach remains open. Tourists are still swimming. And one shark — whether passing through or hunting for tuna — has become an unlikely spokesperson for Bali’s marine ecosystem.
Not a monster. Just a predator. Doing what predators do.