Protesters who shut down part of Adani’s North Queensland coal port are questioning why they were collectively fined almost $80,000, more than six times what the mining company faces for dumping coal-polluted water.

Thirteen protesters from activist group, Frontline Action on Coal, each received fines of up to $8000 dollars after they chained themselves to coal-loading equipment in January.

Adani however, was only issued a fine of $12,000 by the Queensland Environmental Department after it reported releasing water with nearly eight times the permitted level of coal sediment on a beach.