A dive at the Pina Reef in Kas, Turkey (2015). 
Amberjacks are feeding (10 seconds) next to groupers.
The video is shot at about 30m.   

Amberjack feeding next to groupers - Kaş, Turkey

A simple ocaml program that solves the scramble squares puzzle. 
The program constructs the state space and tries all the possible solutions.
For the case I tried, the only solution was found after having explored 3% of 
the state space. The compiled version required approximately 15 mins for this.

A dive at the WWI Italian bomber wreck at 63m at the Flying Fish Reef in Kas, Turkey (2014). 
The wreck appears 25 seconds into the video.

WWII Plane Wreck - Savoia Marchetti SM 79 "Sparviero" - 63m

Another dive at the Flying Fish Reef in Kas, Turkey (2013). The video is by Serdar Leblebicioglu.
You can see the schooling groupers at 10 minutes 30 seconds into the video. 

Flying Fish Reef, Kas - Antalya

During a SAT Trento excursion to Monte Rosa. I took the video at the summit at the Punte Parrot. 

Monte Rosa - P. Parrot - 4436m - July 2012

During a SAT Trento excursion at the Adamello mountains. I took this video at the Care Alto summit.

Video di YouTube