Noemie Stroh / Bottlenose dolphins (Tursiops) swimming around and playing with each other at the bottom of the seabed, Sha'ab El Erg, Red Sea.

Noemie Stroh / Bottlenose dolphins (Tursiops) swimming to the bottom of the seabed. A dolphin swims off and the remaining dolphins, male and female, play together. Then the female picks up a piece of coral and swims...

Noemie Stroh / Tracking shot of a Bottlenose dolphin (Tursiops) male swimming along sandy seabed. The animal is displaying its penis and playing, rubbing itself in the sand. Sha'ab El Erg, Red Sea.

Noemie Stroh / Bottlenose dolphin (Tursiops) pod swimming past. Two animals, one a male, swim close by. Sha'ab El Erg, Red Sea.

Noemie Stroh / Octopus on a block of hard coral (Scleractinia sp.) moving tentacles and breathing, Red Sea, Egypt, September.

Noemie Stroh / Octopus on a block of hard coral (Scleractinia sp.) performing metachrosis / changing colour as threat / defensive behaviour, Red Sea, Egypt, September.

Noemie Stroh / Whitetip reef sharks (Triaenodon obesus) swimming along a reef, Roca Partida, Revillagigedo Islands, Mexico, December.

Noemie Stroh / Silvertip shark (Carcharhinus albimarginatus) swimming into the blue, Roca Partida, Revillagigedo Islands, Mexico, December.

Noemie Stroh / Giant oceaninc manta ray (Mobula birostris) female swimming, Socorro, Revillagigedo Islands, Mexico, December.

Noemie Stroh / Giant oceaninc manta ray (Mobula birostris) female swimming, Roca partida, Revillagigedo Islands, Mexico, December.

Noemie Stroh / Giant oceaninc manta ray (Mobula birostris) female swimming, followed by male, Revillagigedo Islands, Mexico, December.

Noemie Stroh / Giant oceaninc manta ray (Mobula birostris) swimming, San Benedicto, Revillagigedo Islands, Mexico, December.