Baby seal by Taichiro Hasegawa

Diagrams in Double-sided origami by Taichiro Hasegawa
Folded from 2 squares of origami paper

Baby spotted seal by Imai Yudai

Diagrams in Strongest Origami: From Ultra Monsters to Heartwarming Animals by Imai Yudai
Folded from a square of Duo Thai origami paper

Walrus by John Szinger

Diagrams in Origami Animal Sculpture by John Szinger
Diagrams in Origami USA Convention 2012
Folded from a square of Crinkle Charcoal scrapbooking paper

Elephant seal by John Szinger

Diagrams in Origami Animal Sculpture by John Szinger
Folded from a square of cardstock

Monk Seal by Michael G. LaFosse

Diagrams in Origami Art by Michael G. LaFosse and Richard L. Alexander
Wet-folded from a square of Lokta

Sea lion by Joel Stern

Diagrams in My First Origami Kit by Joel Stern
Folded from a square of Thai Unryu paper

Seal by Kunihiko Kasahara

Diagrams in Joy of Origami by Kunihiko Kasahara
Diagrams in Study of Origami Forms - From the Perspective of New Origami by Kunihiko Kasahara
Folded from a square of Lokta

Seal by Manuel Sirgo

Diagrams in PapiroInsectos y Otros Origamis Exoticos by Manuel Sirgo
Folded from a square of origami paper

Seal on a rock by Martin Wall

Diagrams in Encyclopedia of Origami for Children and Adults by Sergei Afonkin and Elena Afonkina
Diagrams in Fun Origami World by Makoto Yamaguchi
Diagrams in ORU Magazine 15
Diagrams in Paper Magic by Paul Jackson
Diagrams in The Ultimate Papercraft and Origami Book by Paul Jackson and Angela A'Court
Folded from a square of Michael LaFosse's "Frog Paper" back-coated with rice paper

Seal on ice by Sergio Gonzalez

Diagrams in Fantasias de Papel by Julian Gonzalez Garcia-Gutierrez
Diagrams in NOA Magazine 180
Diagrams in Origami USA Convention 1993
Diagrams in Pajarita Extra 1995 - El Grupo de Madrid
Diagrams in Pajarita Magazine 15
Diagrams in Pajarita Magazine 143
Folded from a square of double-sided Unryu paper