Carnival Corporation (CCL) saw its stock price plummet 6.72% in pre-market trading on Tuesday, as the cruise industry faced a broad selloff following disappointing news from one of its major players. The decline comes amid a challenging day for cruise line stocks, with peers also experiencing significant drops.

The catalyst for the industry-wide downturn appears to be Norwegian Cruise Line Holdings, which saw its shares tumble about 8% after forecasting fourth-quarter profits below market estimates. This gloomy outlook from Norwegian has sent ripples through the sector, affecting other major cruise operators as well.

Carnival wasn't alone in its decline, as Royal Caribbean, another key player in the cruise industry, also saw its shares fall by approximately 5%. The synchronized drop in stock prices across multiple cruise lines suggests that investors are reassessing the near-term prospects of the entire sector in light of Norwegian's forecast.