Isla San Esteban and Isla Rasa
  • Daily Expedition Reports
  • 14 Apr 2022

Isla San Esteban and Isla Rasa , 4/14/2022, National Geographic Venture

  • Aboard the National Geographic Venture
  • Baja California

Today we explored the two extremes of Baja California. On one end of the spectrum, we visited Isla San Esteban, home to two reptiles found nowhere else on earth: the spiny-tailed iguana and the San Esteban chuckwalla. These endemic species are prime examples of how island biogeography in the Sea of Cortez influences biologic diversity and, similarly, small populations of unique animals.

On the other extreme was our afternoon destination, Isla Rasa. Over a half million pairs of Heermann’s gulls and elegant terns share close quarters after migrating from wintering grounds to the north and south of Baja, respectively. The huge number of birds we saw this afternoon contrasted wonderfully with our morning search for one of the planet’s most isolated populations.

Previous Article

Burro Bay, San Marcos Island

Next Article

Isla San Pedro Mártir

Exploring the Gulf of California: A Living Sea & Desert Isles


Sign Up for Daily Expedition Reports

Fields with an asterisk (*) are required.

Enter travel details to receive reports from a single expedition

Send Daily Expedition Reports to friends and family

*By clicking the submit button, I authorize Lindblad Expeditions to email me; however, I am able to unsubscribe at any time. For more details, see our Privacy Policy.

Please note: All Daily Expedition Reports (DERs) are posted Monday-Friday, during normal business hours. DERs are written onboard the ship only and do not apply to land-based portions of expeditions.