A swarm of crabs crossing a road in Cuba captivated local residents, who recorded the unusual event on their phones and shared it across social media platforms. The 35-second clip, uploaded to TikTok on July 14 by the account "The Most Beautiful Land," quickly went viral. Many commenters identified the location as Playa Girón in Matanzas province.
The video captures the genuine reactions of those witnessing the crustaceans' journey: "Look, look, there are crabs. Hey, I like that one. Check this out. Are you going to catch one? Yes, grab it. How are you going to catch that?"
The crabs featured in the footage belong to the species Gecarcinus ruricola, commonly called the "zombie crab." Their annual migration is one of the most striking natural spectacles in southern Cuba.
Every year, following the first rains, millions of female crabs leave the forests of the Zapata Swamp and cross roads and villages to reach the sea and spawn in the Bay of Pigs.
The 30-kilometer stretch between Playa Larga and Playa Girón is most heavily impacted, with crabs covering the highway for weeks.
This migration typically kicks off in late February or early March, peaking in April and May, but can extend into July, aligning with the video's timing.
The toll on wildlife is significant: an estimated 3.5 million crabs are crushed by vehicles each season along this route.
Local authorities in Matanzas have repeatedly warned drivers of the dangers of traveling this road during the migration, as crab claws can puncture tires.
Specialists caution that the red crab is not suitable for human consumption. However, amidst the severe food crisis plaguing the island, discussions about eating them surface frequently whenever such images appear online.
This phenomenon isn't unique to Matanzas. In June 2025, hundreds of crabs overran streets and homes in the village of Caletón, also within the Zapata Swamp, much to the locals' surprise.
Later that year, in October 2025, an unprecedented invasion occurred in Caibarién, Villa Clara, with pregnant females entering yards and rooms.
In April of the same year, waves of crabs were also reported in Gibara, Holguín, and the phenomenon recurs with less intensity in areas like Guanahacabibes and Santiago de Cuba.
Residents of Caibarién have noted that the scale of these invasions over the past three years is unusual. Oscar Valdés, a local resident, attributed the increase in crab activity to the decline in agriculture in the area.
Each year, Cuban roads during the red crab migration become scenes of wonder for observers, but also pose real hazards for drivers and the crabs themselves, whose survival hinges on completing their journey to the sea.
Understanding the Red Crab Migration in Cuba
What species of crab is involved in the migration?
The species involved in the migration is Gecarcinus ruricola, commonly known as the "zombie crab."
Why do the crabs migrate annually?
The annual migration is triggered by the first rains, prompting millions of female crabs to leave the forests and head to the sea to spawn.
What challenges do the crabs face during migration?
Crabs face significant challenges, including being crushed by vehicles, which results in approximately 3.5 million crab deaths each season.
Is it safe to consume the red crabs?
No, specialists advise that the red crab is not suitable for human consumption.