Pinniped Pinniped Pinnipeds, commonly known as seals, are a widely distributed and diverse clade of carnivorous, fin-footed, semiaquatic marine mammals. They comprise the extant families Odobenidae (whose only living member is the walrus), Otariidae (the eared seals: sea lions and fur seals), and Phocidae (the earless seals, or true seals). There are 33 extant species of pinnipeds, and more than 50 extinct species have been described from fossils. While seals were historically thought to have descended from two ancestral lines, molecular evidence supports them as a monophyletic lineage (descended from one ancestral line). Pinnipeds belong to the order Carnivora and their
What to Do When You Are Dead music and lyrics into the record's concept. The booklet was created by Rob Dobi, with art direction from Jorgensen and Asterik Studio, which also designed the booklet. Dave Hill contributed photography. "Spin" writer Will Hermes noted the album booklet's Hipgnosis-styled layout as being "an important part" of the album. Jorgensen revealed that one of the reasons Armor for Sleep signed to Equal Vision was the label's inclination to satisfy the group's creative vision. On November 11, 2004, "What to Do When You Are Dead" was announced for release and a rough mix of "Car Underwater" was made available for streaming.