Well, after many trips to Cozumel, in either March or November, we will be changing up this year to a summer vacation. We are booked for the end of August. I'm not crazy about traveling there in the summer months, but my husband would like to elimenate another venture off his "Bucket List" and swim among the Whale Sharks. I've been doing a little reserch about this and know they are there between the end of June, until the middle of Sept. and are between Cancun and Holbox. Sooooo, a summer vacation it is. It would be so much easier to stay in Cancun, but that's just not our cup of tea. We love Coz. I have come across a few tours, with very different prices. My question is, ....has anyone done this and can recommend a good tour company, and is this something I should book online, or can I find someone in town that offers this. He will be purchasing a dive pkg. as well, but will do that when we arrive. He is familiar with the different dive op's there. The end of Aug. shouldn't be too busy, but I don't know. Thanks for any suggestion with this.