Nguyen Hai Linh, head of the Department of Culture, Information and Tourism in Co To island district of Quang Ninh Province, said each group consisted of three to four whales about 5-10 meters long, and they come to feed in the waters of Dau Trau and Mong Rong, about 700 meters from Co To island.
"Whales usually appear for about 15-20 minutes in the morning and swim very close to fishing boats, creating an interesting scene," Linh said.
Many beachgoers in Co To used their phones to record the whales.
A whale looks for food in Co To waters. Photo by VnExpress/Le Tan |
Whales love to eat krill, small fish, zooplankton, phytoplankton, and algae.
Vietnamese fishermen worship whales as their guardians at sea.
In previous years, whales also showed up in Co To waters to look for food, but only a few. This year, a large number of whales have flocked to the waters, proving its marine ecosystem is recovering, Linh said.
Starting from mid-September, tourists are banned from taking plastic bags or single-use plastic items on the island as it seeks to protect its marine ecosystem.
Situated around 80 kilometers from the mainland, Co To in the northern province of Quang Ninh is famous for its pristine islets and primeval forests; access used to be strictly controlled due to its proximity to the Chinese border.