You can see a bit of everything on most sites and it is difficult to say what you will see or won't. As said, telling the DM what you want to see is good. Hopefully you will use a dive op that does not have set sites on set days. There are plenty of threads on dive ops.
From what can put down in a few minutes:
Corals and swimthroughs - In no particular order: Palancars, Santa Rosa (quite a few), Cedral pass has a long one, there are short passages but not great on La Francesa and Punta Dalila but these can dead end. Not a ton of fish at the Palancars. I would not do Devils Throat on Punta Sur as you have few dives.
Corals with columns- Colombia, Palancars, Santa Rosa, Cedral Wall, Punta Sur but that is deep. Less fish generally but Colombia, Punta sur and sometimes the Palancars have small sharks (black tip reef and every once in a while a hammerhead) and eagle rays.
Corals and fish - The shallower sites with hard bottoms like La francesa, Punta Dalila, Cedral Pass, San Francisco wall and top, and to a lesser extent IMO, Yucab and Tormentos. The last two generally have faster current but I have dived them on unusual occasions with very little current. These sites can have schools of jacks. I generally don't dive Paradise, Las Palmas, or Chankanaab since we stay south on the island.
Palancar bricks and Colombia shallows can have alot of fish but not alot of big corals.
Those sites on the north end have faster currents, less small fish, pelagics like large turtles, nurse sharks and eagle rays but both vary by time of year, low corals (fewer) and seagrasses. Those much further to the north I understand have reef sharks but not many dive ops go there.
Night dives - My favorites are in no particular order, top of San francisco wall, Santa Rosa shallows, and Cedral Pass. The latter can have faster currents. We dive these as we generally stay on the south end of the island. Paradise is used alot for night dives and I have dived it a few times for night dives.
I have an old dive site book called Cozumel Dive Guide and Log Book by Underwater Editions (2003-05-04)
Here is a link to one of the sites that has it. I am not pushing Amazon. Cozumel Dive Guide and Log Book by Underwater Editions (2003-05-04): Amazon.com: Books. It has become pricey and seems to be only available used. It has excellent illustrations and descriptions. Others types as mentioned are available online but may have only dive site maps or less info YMMV.
Edit: Looks like it can be bought directly for $26 from Cozumel maps, cozumel diving, cozumel dive, diving cozumel, scuba diving cozumel
From what can put down in a few minutes:
Corals and swimthroughs - In no particular order: Palancars, Santa Rosa (quite a few), Cedral pass has a long one, there are short passages but not great on La Francesa and Punta Dalila but these can dead end. Not a ton of fish at the Palancars. I would not do Devils Throat on Punta Sur as you have few dives.
Corals with columns- Colombia, Palancars, Santa Rosa, Cedral Wall, Punta Sur but that is deep. Less fish generally but Colombia, Punta sur and sometimes the Palancars have small sharks (black tip reef and every once in a while a hammerhead) and eagle rays.
Corals and fish - The shallower sites with hard bottoms like La francesa, Punta Dalila, Cedral Pass, San Francisco wall and top, and to a lesser extent IMO, Yucab and Tormentos. The last two generally have faster current but I have dived them on unusual occasions with very little current. These sites can have schools of jacks. I generally don't dive Paradise, Las Palmas, or Chankanaab since we stay south on the island.
Palancar bricks and Colombia shallows can have alot of fish but not alot of big corals.
Those sites on the north end have faster currents, less small fish, pelagics like large turtles, nurse sharks and eagle rays but both vary by time of year, low corals (fewer) and seagrasses. Those much further to the north I understand have reef sharks but not many dive ops go there.
Night dives - My favorites are in no particular order, top of San francisco wall, Santa Rosa shallows, and Cedral Pass. The latter can have faster currents. We dive these as we generally stay on the south end of the island. Paradise is used alot for night dives and I have dived it a few times for night dives.
I have an old dive site book called Cozumel Dive Guide and Log Book by Underwater Editions (2003-05-04)
Here is a link to one of the sites that has it. I am not pushing Amazon. Cozumel Dive Guide and Log Book by Underwater Editions (2003-05-04): Amazon.com: Books. It has become pricey and seems to be only available used. It has excellent illustrations and descriptions. Others types as mentioned are available online but may have only dive site maps or less info YMMV.
Edit: Looks like it can be bought directly for $26 from Cozumel maps, cozumel diving, cozumel dive, diving cozumel, scuba diving cozumel
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