The Bocas del Dragón (Dragon's Mouths) are the series of straits separating the Gulf of Paria from the Caribbean Sea. There are four Bocas, from west to east:
- The Boca Grande or Grand Boca separates Chacachacare from the Paria Peninsula and Patos Island of Venezuela. The international border between Trinidad and Tobago and Venezuela runs through this strait.
- The Boca de Navios or Third Boca which separates Chacachacare from Huevos.
- The Boca de Huevos or Second Boca which separates Huevos from Monos.
- The Boca de Monos or First Boca which separates Monos from the Chaguaramas Peninsula of Trinidad.
The passage was named by Christopher Columbus on his third voyage.