Scrimshaw is the name given to scrollwork, engravings, and carvings done in bone or ivory. Typically it refers to the handiwork created by whalers made from the byproducts of harvesting marine mammals. It is most commonly made out of the bones and teeth of sperm whales, the baleen of other whales, and the tusks of walruses. It takes the form of elaborate engravings in the form of pictures and lettering on the surface of the bone or tooth, with the engraving highlighted using a pigment, or, less often, small sculptures made from the same material. However the latter really fall into the categories of ivory carving, for all carved teeth and tusks, or bone carving. The making of scrimshaw began on whaling ships between 1745 and 1759 on the Pacific Ocean, and survived until the ban on commercial whaling. The practice survives as a hobby and as a trade for commercial artisans. A maker of scrimshaw is known as a scrimshander. The word first appeared in print in the early 19th century, but the etymology is uncertain.
Scrimshaw is derived from the practice of sailors on whaling ships creating common tools, where the byproducts of whales were readily available. The term originally referred to the making of these tools, only later referring to works of art created by whalers in their spare time. Whale bone was ideally suited for the task, as it is easy to work and was plentiful.
The widespread carving of scrimshaw became possible after the 1815 publication of the journal of U.S. Navy Captain David Porter exposed both the market and the source of the whale teeth, causing a surplus of whale teeth that greatly diminished their value and made them available as a material for ordinary seamen. Around this time is the earliest authenticated pictorial piece of sperm whale scrimshaw (1817). The tooth was inscribed: "This is the tooth of a sperm whale that was caught near the Galapagos islands by the crew of the ship Adam [of London], and made 100 barrels of oil in the year 1817."