Represents the NORI project relates to all payments to the Government of Naoero (formerly Nauru), including the Naoero Seabed Minerals Authority. Nauru Ocean Resources Inc Project [Member] NORI Project Represents the project of our wholly owned subsidiary Tonga Offshore Mining Limited ("TOML") relates to all payments to the Government of Tonga, including the Tonga Seabed Minerals Authority and the Ministry of Lands and Natural Resources Tonga Offshore Mining Limited Project [Member] TOML Project Represents the project of our wholly owned subsidiary Tonga Offshore Mining Limited ("TOML") relates to all payments to the Government of Tonga, including the Tonga Seabed Minerals Authority and the Ministry of Lands and Natural Resources TheMetals Company USA, LLCA Project [Member] TMC USA-A Represents the TMC USA-B project relates to NOAA application fees paid by TMC USA for its DSHMRA application for an exploration license covering the TMC USA-B area of the CCZ. TheMetals Company USA, LLCB Project [Member] TMC USA-B NAURU Naoero TONGA Tonga UNITED STATES United States Represents the National Oceanic and Atmospheric Administration ("NOAA"). National Oceanic and Atmospheric Administration (NOAA) [Member] National Oceanic and Atmospheric Administration ("NOAA") Represents the Republic of Naoero, Naoero Seabed Minerals Authority. Republic of Naoero, Naoero Seabed Minerals Authority [Member] Republic of Naoero, Naoero Seabed Minerals Authority Represents the Kingdom of Tonga, Ministry of Lands and Natural Resources. Kingdom of Tonga, Ministry of Lands and Natural Resources [Member] Kingdom of Tonga, Ministry of Lands and Natural Resources Represents the Kingdom of Tonga, Tonga Seabed Minerals Authority. Kingdom of Tonga, Tonga Seabed Minerals Authority [Member] Kingdom of Tonga, Tonga Seabed Minerals Authority