We regularly post short Marine Wildlife Videos an Photographs with a short explanation regarding the subject and the technique used to capture the image.


Subject: A nocturnal Tube Anemone (order Ceriantharia) feasts on the zooplankton attracted by my video lamps. Hundreds of little crustaceans and worm like animals swarm in the light beams and are getting caught by the stinging tentacles of the anemone’s crown. The Cnidarian then retracts its arms towards the oral disk to engulf its catch.

Technique: This anemone was filmed during a night dive. Because you carry the only light source in the darkness of the night, it is important NOT to bring your lights too close to the subject to avoid over-illumination of the subject and this will also prevent unwanted critters, attracted by your lights, swarming in front of the camera

Subject: Juvenile Lyretail Hawkfishes (Cyprinocirrhites polyactis) are fighting the current, picking out bits of plankton while they swim. This is the only species of Hawkfish that venture in the open water to catch food. As for all Hawkfishes, these little ones do not have a swim bladder. That is why most Hawkfishes prefer to rest on things like coral branches. Due to the lack of a swim bladder swimming against the current is very difficult: it costs these fish an immense effort to maintain height/depth and speed.

Technique: It is best to position yourself at a right angle to the current when filming fish that are facing that particular current. Having a perpendicular shot of the fish allows you to show more details. However if you would position yourself at a 45° angle you would get a better depth perception.

Subject: A juvenile Peacock Razorfish (Iniistius pavo) is repeatedly diving into the sand. These youngsters mimic seaweeds or leaves to avoid predation. In addition to being excellently camouflaged they are very prudent as well: at the first sign of danger they hide underneath the sand, where they also sleep at night.

Technique: Because they are known to spend hours under the sand, it was sheer luck to find a specimen that performed a little “dive-in-the-sand” show. Most times they duck away to arise only when the potential threat (= the observing diver) has vanished.

All images Copyright 2020 Olivier Van den Broeck and Greet Meulepas for Beyond scuba. All rights reserved.