**Acknowledgements**

We wish to thank all colleagues that contributed to improve the knowledge of the gas hydrate in Antarctica. In particular, in alphabetic order: Flavio Accaino (OGS, Italy), Daniela Accettella (OGS, Italy), Angelo Camerlenghi (OGS, Italy),

Emanuele Lodolo (OGS, Italy), Maria Filomena Loreto (former OGS, Italy, now Istituto di Scienze Marine, CNR, Italy), Hector Marin-Moreno (former OGS, Italy, now Norwegian Geotechnical Institute, Norway), Jong Kuk Hong (Korea Polar Research Institute, Korea), Xuewei Liu (China University of Geosciences, China), Cristina Neagu (former OGS, Italy), Sha Song (former OGS, Italy, now Chang'an University, China). The Authors have been partially supported by the Programma Nazionale di Ricerche in Antartide (PNRA), the Ministry of Foreign Affairs, the TALENTS FVG Programme - European Social Fund, and the Ministry of Education, Universities and Research under the grant for Italian participation in the activities related to the international infrastructure Partnership for Advanced Computing in Europe (PRACE).
