university of arizona

CEDO Field Trip

Class > CEDO Field Trip

Have your passport available to show a staff member before getting on a van. The drive to CEDO takes 4 1/2 - 5 hours. We'll stop midway for a restroom break.

CEDO is a research station located in Las Conchas, a suburb of Puerto Penasco, Sonora, Mexico along the NE coast of the Gulf of California. The station is 1 block from the beach, and 2-3 miles from town. There is no store or restaurant within walking distance.

The phone at CEDO for emergencies is 011-52-638-20113. There is no public phone. Phone calls can be made in town in an emergency. It can be hot and humid in the summer and cold in the winter. CEDO has air conditioning in the sleeping rooms, but no heat. There may be a few mosquitoes in summer, so bring insect repellent.

Life at CEDO is like camping but with a kitchen and bathrooms. We will have two rooms to share for sleeping with stacks of foam pads for our use. Or you can sleep on the wooden deck overlooking the ocean, or pitch a tent in front of the station on the sand. There is a well-stocked library. Water conservation is mandatory at CEDO (one of driest places on earth); but brief showers are fine.

Bring lunch and breakfasts of easy-to-prepare food (we will stop for lunch on our way home). CEDO has a toaster, microwave, coffee maker, stove (no oven), refrigerator, pots, pans, silverware, cups and dishes. There is bottled water.

If you would like to help drive one of the vans, please bring your driver's license. You cannot have had any tickets for speeding or have been in any accidents for the past three years. YOU MUST BE HOV-TRAINED TO DRIVE ONE OF THE VANS. Contact Risk Management about how to become trained if you are interested in helping to drive.

Things to bring

  • cash for personal use (small bills, around $15)
  • Valid proof of citizenship
  • food for 2 lunches & breakfasts (fast, easy-to-prepare foods)
  • sunscreen
  • insect repellent (summer)
  • clothes to protect you from heat and sun and mosquitos
  • warm clothes, hat (winter)
  • toiletries
  • sun hat
  • towel
  • sleeping bag
  • swim suit
  • shoes to get wet, for walking on the reef, wet mud, and in tidepools: eg, tevas, old tennis shoes, or booties (flops are not sufficient for walking on slippery rocks)
  • 1 quart plastic water bottle for day trips away from CEDO
  • fanny pack or small day pack for personal gear during day
  • flashlight and extra batteries for night tide-pooling
  • clipboard with large rubber band or clips to secure paper
  • pencil and waterproof pen
  • course texts, field trip handouts

Optional and useful:

  • Binoculars
  • field guides
  • camera
  • watch with alarm and minute hand
  • pillow
  • 5x or 10x hand lens or "loupe"


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