A shark is one of the recurring LEGO animal figures that are included in many underwater themes including Aquazone, Town Divers and Pirates (both Pirates). Two versions have been introduced since its debut in 1989.
The first dedicated LEGO shark figures were included in two sets of the Pirates theme in 1989. These sharks were colored in dark grey. During the following years the shark became a ubiquitous part of the sea life in the LEGO universe and made appearances in many sets in a wide variety of themes. In 1997 a white colored variant was introduced. The last two sharks released in 2008 were molded in dark stone.
This first shark version consisted of two pieces: the body (including the lower jaw, the tail and the fins) and a separate head piece with the upper jaw that allowed the mouth to be opened or closed. The interior was hollow, so that the shark could swallow little objects which could measure up to 1 stud in diameter. Of course this limitation didn't allow it to eat entire minifigures, which was remedied in version 2. The sawfish, introduced in 1997, used the same body as the shark but included a different head piece.
This version also consists of a body piece and a separate movable head with upper jaw. These parts provide more details than the previous version. The body has now gills behind the head and the teeth have a different color than the rest of the shark. It also has two studs on the top of the body piece in front of the dorsal fin.