When packing for a trip to Ecuador and the Galapagos Islands pack lightly!
The fewer things you bring the more carefree and enjoyable your trip will be. It's best to pack your clothes in two bags: one with warmer clothes and city clothes that can be left in your hotel in Quito, and a separate bag for storage of your gear aboard the boat in Galapagos.
You should be able to lock all your luggage regardless of where you are traveling. Following are a few suggestions
Swimsuit & Sunblock (a couple of bottles)
Sunglasses and a hat
Good walking shoes, sandals or water shoes (2 pairs -- one to keep dry, and the other for wet landings)
Quick drying shorts (a couple of pairs)
A top to wear while swimming (some people, because of the sun, might want to look into long-sleeved tops and long pants as well!)
T-shirts or short sleeved shirts (quick drying ideal)
A sweatshirt, fleece or warm top (the evenings on the boat get cool)
A waterproof shell
A pair of long pants
A camera and lots of film: The average tourist takes two rolls/day on the islands! Film is available here, but it's expensive.
We also recommend purchasing one or two underwater cameras to take photos of the animal life while snorkeling!
Dramamine or motion sickness pills: During the evening, the boat does sway from side to side, making some people feel a bit uncomfortable.
Basic toiletries: toothbrush, toothpaste, towel, shampoo, soap, shaving gear, and all prescription medicine needed
A small flashlight
A journal or notebook to jot down those wonderful Galapagos memories.
Light cotton scarf to protect your neck
Long-sleeve light cotton shirt
Snorkel, mask (with prescription lenses if you require them) and fins
Waterproof bag for gear
Pepto Bismol (or Kaopectate) for stomach upset and mild diarrhea
Immodium or Lomotil for more severe diarrhea
Extra batteries, extra tapes, extra film & X-Ray proof bag for film
Copy of passport
Travel insurance, we recommend world travel center
Spare pair of prescription glasses
Water bottle (1 litre)
Notarized letter from other parent authorizing travel if both parents are not