Klee Passage is a shallow channel of water which separates Knox Atoll

Knox Atoll

Knox Atoll is an unihabited coral atoll of 18 islands in the Pacific Ocean, and is the southernmost atoll of the Ratak Chain of the Marshall Islands. The total land area is only , but it encloses a largely sand-filled lagoon with an area of . The atoll measures in length and is wide...

 from Mili Atoll

Mili Atoll

Mili Atoll is a coral atoll of 92 islands in the Pacific Ocean, and forms a legislative district of the Ratak Chain of the Marshall Islands. It is located approximately southeast of Arno Its total land area is making it the second largest of the Marshall Islands after Kwajalein. It encloses a...

 in the Marshall Islands

Marshall Islands

The Republic of the Marshall Islands , , is a Micronesian nation of atolls and islands in the middle of the Pacific Ocean, just west of the International Date Line and just north of the Equator. As of July 2011 the population was 67,182...

.

A submarine sand bank is located directly under the water channel. Due to this sand bank, the passage is not accessible to large sea vessels which could easily get embedded in the sand. The sand bank was originally above water forming a connection between the two atolls however, the erosion by the sea carved out this passage.