The Caribbean island of Cozumel lies off the Mexican Yucatan peninsula where its impressive reef structures and crystal clear waters offer some of the best diving in the Caribbean. I met several scuba divers who come back to Cozumel every year as it is fairly cheap compared to other destinations in the area and is easy to reach from the US (guide to Cozumel diving).

turtle cozumel

National Park

Some of the reefs around the island are protected as part of the Arrecifes de Cozumel National Park. The park covers an area of 120 km2 (46 sq mi) which includes the southern reefs with most of the dive sites. The rest of the area is also famous for sport fishing and two dolphinaria can be found on the island. Both are built in the ocean, one even inside the national park which makes it look more natural. It is not!! These intelligent marine mammals should not be held in captivity and I find it very sad to see how many dolphinaria exist in the region around Cancún. Please don’t support this and don’t swim with captive dolphins.

crab cozumel

The best dive sites

Back to the diving; my favourite dive sites are in the south of the island and include “Santa Rosa Wall”, “Palancar” (which is actually four dive sites), “Colombia” and “casa blanca”. Most of these are composed of impressive coral structures, walls, caverns, caves and tunnels. So there are a lot of places to swim through and play 😉 I do love to swim through structures like this and discover what there is to find in every corner. Often small schools of fish, huge crabs and lobsters hide underneath the overhangs and in the caverns while the light creates magical patterns in the water shining down between the coral.

mexico underwater video workshop

“Casa blanca” doesn’t seem to be an official dive site but there is a white house on the beach. This ended up to be one of my favourites as we’ve seen soooo many turtles, friendly nurse sharks, the famous splendid toadfish and pipehorses at this site.


Devils throat

One of the most famous dive sites is the “devils throat” at “punta sur” which is a cave leading down from 24 m (80 ft) to 41 m (135 ft) where it opens into a wall. This dive is at the edge of the limits of recreational diving and only suitable for very experienced divers. Unfortunately we couldn’t go there due to the weather. I will have to do that next time.

fish cozumel

Ripping currents

Outside of the sheltered area between the reefs the currents are ripping. Drift diving is very common in Cozumel. I love this too. With the incredible visibility of way more than 30 m the drift dives feel more like flying than diving. Seeing all the stunning coral, sponge and gorgonia formations passing by with loads of tropical fish, turtles and nurse sharks without even moving is an amazing experience.

It’s getting a bit more difficult when trying to take photos as then you might have to fight against the currents. A lot of work for a most probably not that perfect picture – try to hold a camera still while finning hard…

fish cozumel

The currents are not always predictable, they change directions and on a crazy day there might be a phenomenon called “washing machine”. This type of current is a bit like a tornado caused by two counter-currents which can suck a diver down or push him up. I experienced a very mild one which did suck me down somewhat, however this was easy to reverse by putting some more air in my BCD. It didn’t get me by surprise as I’ve already seen my bubbles going in a big circle around me instead of going up to the surface. So far I’ve only seen crazy currents like that in Komodo, Indonesia.

turtle cozumel


The turtles in Cozumel are under protection therefore it is possible to see them on most dives and they are not scared of humans. It is possible to swim very close to them, they look at you but they don’t leave. I had a wonderful encounter with a turtle that swam back down from the surface – I was just staying where I was (nor really, as I was drifting but so was the turtle) watching her. She swam straight towards me, always looking me in the eye and then passing just a few cm below me continuing down to the reef. Wow!

nurse shark cozumel

Nurse Sharks

Also the nurse sharks are very friendly. However, this is for a different reason – the lion fish in the Caribbean are not native and pose a threat to the ecosystem. As a consequence divers started to kill them during dives and then feed the dead lion fish to the nurse sharks. The sharks came by having a look at each diver checking for food.

catch lionfish


I’ve never seen so many spiny lobsters as in Cozumel. I often discovered a small overhang with several lobsters squeezing together under it as if there were no other places to hide. Lobsters normally sit under something with only the antennae sticking out of it. However, in Cozumel I’ve seen some out walking around. I tried to take a video of one which was walking mostly backwards away from me on its 10 legs. They can also swim (as well backwards) but I’ve never seen that.

lobster cozumel

Endemic species and others

Besides these creatures the area is home to many tropical fish, an endemic splendid toadfish (the underwater sign used for it I knew as “cuttlefish”, you can imagine how I did not see the toadfish under a rock at first while looking for a cuttlefish somewhere above), some schools of larger fish like jacks and occasional pelagics (mostly eagle rays).

ray cozumel

I haven’t been to Cozumel yet as I thought it’s “just” nice coral but I know now it is so much more than that. Cozumel offers a variety of impressive dive sites which are fun also for more advanced divers – formations with endless swim-throughs, ripping currents for awesome drift dives and diverse marine life.

mexico underwater video workshop


Have you been to Cozumel or would you like to go there? I would love to hear what fascinates you the most about Cozumels reefs!