BEIJING — Is an alien mollusk species choking your shoreline? Don’t despair. China’s ravenous, inventive internet users have an answer to unwelcome shellfish.

They’re ready to devour them.

The Danish Embassy in Beijing has been absorbing that lesson since it shared a report online this week about a plague of Pacific oysters, a stubborn, gray intruder that has spread explosively along parts of the Scandinavian coast.

“Fresh oysters are cramming the shore, but Danes aren’t the least bit happy,” the embassy explained on Monday in a message on Weibo, a popular Chinese social media service like Twitter. “Visit the Danish coast to eat fresh oysters, is it a date?” it added.

The reaction was more than the embassy anticipated. By Friday the message had attracted around 15,000 quips and comments, and the Pacific oyster invasion was reported by many Chinese newspapers and news websites.