Bull sharks have been caught approximately NUMBER@1 miles up the LOCATION@1 , and have been observed approximately NUMBER@2 miles up the LOCATION@2 .

It has been found up to NUMBER@3 miles -LRB- NUMBER@4 km -RRB- up the LOCATION@1 in the LOCATION@3 and NUMBER@2 miles -LRB- NUMBER@5 km -RRB- up the LOCATION@2 in LOCATION@4 .
