If your question is if the health insurances is a mandatory requirement to enter the Galápagos Islands the answer is no, at least not at the moment. It was discussed by the Ecuadorian government to add this to the list of entry requirements but this has not been approved yet, so you won’t be required to show proof of your health insurance to be able to access to the islands. Here’s the press release about this topic from the official government website. We usually keep an eye to see the latest news about this and if its approved or not, so you can be sure that this page is always updated.
Even thought is not mandatory, as we mentioned before, we highly advise you to get one. They are as cheap as $3 a day and can save you a lot of money for even the slightest accident or a bug bite for example. It’s always better to be prepared.