Derrick's sandbank appeared following Cyclone Fantala, which struck the region in mid-April 2016. Its initial area was 0.3 hectares, and it wasn't until 2019 that its elevation was consistently higher than the high tide level. Its permanence was also confirmed by the colonisation of shrubs and birds. A study conducted in 2023 showed that the area had increased to 7.8 hectares.