What material does Genesis say Noah’s Ark was made from?

Genesis says Noah’s Ark was made from gopher wood.

Genesis 6:14 instructs Noah to make the ark from “gopher wood” and to construct rooms inside it. The Hebrew term appears only in this passage, so its precise botanical identity is not known with certainty.

Many translations retain the phrase “gopher wood” rather than identifying a modern tree species. Proposals such as cypress or cedar have been discussed by interpreters, but none is established as the definitive meaning.

The same verse says Noah was to cover the ark with pitch inside and out. Thus the text specifies both a named building material and a coating intended to make the vessel watertight, while leaving the exact species of wood uncertain.