**Acknowledgements**

The author would like to thank the members of the projects; Antarctic Seabed Carbon Capture Change, Changing Arctic Ocean Seabed and ICEBERGS (NERC-Conicyt). The author would also like to thank the following colleagues for help with figures; Will Goodall-Copestake and Sorcha Barnes (**Figures 1**, **3**, **4**, **10**), Floyd Howard (**Figure 2**), Jo Hopkins (**Figure 6**), Jamie Oliver (**Figure 7**) and Chester Sands (**Figure 8**).
