Small colorful anemone in the Netherlands. Taken with a snoot.

A nice gudgeon portret. Taken in the biggest salt water lake of the Netherlands, 'de Grevelingen'.

A tunnel in an old slate mine in Germany. Can you imagine that people were working here?

JJ CCR Diver in Nuttlar

A blind cave fish and 2 cichliden in a cave in Mexico. The blind cavefish is quite rare, and the cichliden follow divers with their lights inside the cave. The blind fish did not survive the attack. Maybe not the best picture, but it tells a story

Entrance of a cave in Mexico. The cenotes in Mexico are really clear.

The famous entrance of Cenote Carwash in Mexico. The picture is taken from inside the cave.

Divers during a mine diver course in Nuttlar - Germany

A very special picture of red-eyed damselflies under water. This couple is putting their eggs underwater. The silver color is due to small air bubbles to 'breathe' under water.

Only in cenote Zapote in Mexico these kind of speleothems can be found. These bells are really strange and still grow under water where normal stalactites only can grow in dry areas.

Speleothem with diver in the background in the cenote Dos Palmas in Mexico. The caves in Mexico are the best ones in the world.
Shortlisted!

Hells Bells, the only place in the world where these bells can be found. A unique cenote. These formations grow under water, so are not formed in a dry period. They still grow. The complete mechanism is not understood, but anaeroob bacteria help.

The toad migration in the Netherlands. This phenomena only lasts a few days. The toads are looking for a place to drop their eggs.

The mysterious 'Hells Bells' in cenote Hells Bells/Zapote Mexico with the mystic sulfur layer. These bells are only found there, nowhere else in the world.

Cenote Nohoch in Mexico. De water is always clear. A very nice cave to dive in.

Black and White image of a diver in a german lake

France / LOT Cavediving

Esox lucius (nothern pike) in its environment at Ekeren. (f/9, 1/160, ISO-640, 18mm). - Erik

Sidemount Diver in Nuttlar / Slate Mine

A white Cyprinus carpio (common carp) in a lake at Ekeren. (f/22, 1/160, ISO-3200, 50mm). - Erik

Fresh water nudibranch in the Netherlands. Not as colorfull as in salt water in the tropics, but even a very beautifull creature.

Ponte dei Salti

Verzasca

Eye of a brown frog that tries to stay under water during the wintercold. You can see the third eyelid of the eye.

Larvea of a brown frog. the small 'fishes' have really nice mouths, they are really cute.

Larvae of a dragonfly. Almost nobody knows that dragonflies live most of their lives under water. People only know them as the animals with wings. But they live a few years under water before their last stadium in their lives.

In 1 lake I dive quite a lot in winter, there are frogs found under water. I really like that. The frogs are found at 16-20m depth. And the special thing is that you can see that the waterpressure makes the frogs flat. But they are still alive.