This is a popular question as to when you look for “Cancun whale shark tours” you may not actually know where the sharks are exactly. Every year hundreds of whale sharks arrive in the waters of Cancun in fact it’s the largest aggregation of whale sharks in the world. Sometimes we find whale sharks in Isla Mujeres, near Cancun, and sometimes we find the whale sharks in Holbox. It all depends on where their preferred food source is drifting on any particular day. The main difference is that the waters around Isla Mujeres are warm, clear, and blue, while the waters around Holbox are green and colder. Either way, you will get to swim with 18+ foot whale sharks so wherever they are, we will find them.