For this Nazjatar daily, it is worth noting that there is a cave in the south with more than enough of these. The only thing to watch is that you will aggro more than one once you attack any. But that should be of minor issue to most people and is a lot easier and quicker than finding them dotted about the place.
The cave is at 38.89 85.32
The cave entrance is underwater at 40.34 81.14