Usually you think of sharks in the open waters, but one may have taken a short cut through Cape Cod Canal recently.

The Wareham Department of Natural Resources took to Facebook on Monday to warn people about a potential shark in the canal.

According to their reports, a Great White shark up to 12' in length was spotted on Sunday September 16th. It was last seen swimming in the area between Stony Point Dike and Wings Neck, in the old Cape Cod Canal cut of Bourne.

They did note that beaches in the area were not closed, but that they were posting to raise awareness for those in the waters around Wareham.

Obviously after this weekend's tragic events in Wellfleet officials want everyone heading to the beach to be cautious in the water.

Waters can typically be at their warmest of the season in September, so there will likely be an increase in shark sightings before things get too cold for these massive fish.

And with unseasonably warm days lately, people still want to head for the waters as well to swim, surf and fish.

Clearly just because you're staying in the canal doesn't mean you should be letting your guard down. Keep an eye out for the tell-tale dorsal fins and share any shark sightings of your own with authorities.

The Wareham Department of Natural Resources also reminds people to be aware that the ocean sunfish (Mola Mola) has also started making an appearance around the area and they too have a large dorsal fin that can be seen above the water.