Fish: an animal that lives in the water, is covered with scales and breathes by taking water through its mouth or the fresh of these animals that is eaten as food.

Crab: a crustacean with a broad carapace, stalked eyes, and five pairs of legs, the first pair of which are modified as pincers. Crabs are abundant on many shores, especially in the tropics, where some have become adapted to life on land.

Sponge: a piece of a soft, light, porous substance originally consisting of the fibrous skeleton of an invertebrate but now usually made of synthetic material. Sponges absorb liquid and are used for washing and cleaning.

Amber: hard translucent fossilized resin produced by extinct coniferous trees of the Tertiary period, typically yellowish in color.

Trace: to find some or something that was lost.

Horseshoe: a shoe for a horse formed of a narrow band of iron in the form of an extended circular arc and secured to the hoof with nails.

Preserved: to keep something as it, especially in order to prevent it from decaying or being damaged or destroyed.

Tar: a dark, thick, flammable liquid distilled from wood or coal, consisting of a mixture of hydrocarbons, resins, alcohols, and other compounds. It is used in roadmaking and for coating and preserving timber.

Mud: earth that has been mixed with water.

Mold: a soft green, gray, or black growth  that develops on old food or on objects that have been left too long in warm. slightly wet places.

Trilobite: a simple, flat sea creature that lived in the earlies period of life on aerth, with a hard outer layer and a body in three parts.

Mineral: is a naturally occurring inorganic solid, with a definite chemical composition, and an ordered atomic arrangement. 

Carbon: is a very abundant element. It exists in pure or nearly pure forms – such as diamonds and graphite – but can also combine with other elements to form molecules.