Dolphin by Roberto Muro

Diagrams in Origami USA Convention 2003
Folded from a square of metallic origami paper

Dolphin by Ryo Aoki

Diagrams in Tanteidan 17th convention
Folded from a square of Nicolas Terry's tissue-foil

Dolphin by Seo Won Seon (Redpaper)

Diagrams in Creative Origami by Seo Won Seon and Lee In Kyung (Red and White Paper)
Folded from a square of printing paper

Dolphin by Stephan Weber

Folded from a square of metallic origami paper

Dolphin by Yoo Tae Yong

Diagrams in Origami Pro 1 - Animals
Diagrams in Origami Works of Yoo Tae Yong by Yoo Tae Yong
Folded from a square of Nicolas Terry's tissue-foil

Penguin by Makoto Yamaguchi

Diagrams in Let's Enjoy Origami in English and Japanese by Makoto Yamaguchi