Part two of our co-led Mexican expedition with Backscatter was to Isla Mujeres, where whale sharks aggregate each summer by the hundreds to feed on the Bonito eggs. Scuba diving is not allowed in Isla Mujeres waters, so if you weren’t an endurance swimmer before the trip, you certainly became one during the trip! These docile (and vegetarian) behemoths are only concerned with feeding, and will even swerve out of your path to avoid a collision; however, you must always be aware of the possible tail slap! Read about our adventure here.