Are there jellyfish in the sea in Nha Trang and are they dangerous?

In early August 2026 the sea at Doc Let beach was full of jellyfish: just a few early in the morning, many by evening. No one was seen getting stung, and one beachgoer picked them up by hand, suggesting they were dead. The traveler could not judge how dangerous they were.

In July 2026 a jellyfish stung one traveler's daughter, leaving a sting mark about 5 cm long, after which the girl did not go back into the sea.

On July 1, 2026 lots of tiny jellyfish or similar creatures appeared in the water — from 0.5 cm and up, some elongated. The traveler noted it was the first such day of the trip and swimming was unpleasant.

One traveler recalled in June 2026 that on a previous trip his girlfriend was once stung by a jellyfish, while he was left alone.

In mid-June 2026 a jellyfish stung four people in a single day at Marina Beach. Even so, the travelers liked the place: it was not crowded.

In the same June 2026 incident, a jellyfish wrapped its tentacles around a girl's arm. A local rubbed the sting with ice and lime and tried to catch the jellyfish. The traveler who described it recommends taking a burn remedy and an allergy remedy to the beach.