As with most lakeside loops in Grand Teton National Park, counter-clockwise is the preferred direction for the best views. Wildlife, especially bear, moose, coyote, and elk, are prevalent around the lake, and the National Park explicitly warns of their dangers. Though there have been no fatal bear encounters, there are a handful of documented attacks since the 1990s. While the park recommends carrying bear spray, bear bells and other similar noisemakers may also help to deter encounters.

Two Ocean Lake "was named for Two Ocean Pass about 25 miles (40 km) to the northeast where Atlantic Creek flows east and Pacific Creek flows west," according to Wikipedia. However, they continue to state how "the name is a misnomer," as the lake itself flows solely into Pacific Creek. Due to the unusual phenomenon, Two Ocean Pass was designated a National Natural Landmark in 1965 and is often referenced in western films and novels.

This run is extremely easy to follow and has very little elevation gain. At the northernmost point of the loop, you'll reach a junction with the Grand View Point Trail. Many suggest a side trip to its namesake vista, though the 1-mile detour includes a stout 600-foot climb that would significantly increase the difficulty of the run.

Source: https://en.wikipedia.org/wiki/PartingoftheWaters http://www.tetonhikingtrails.com/two-ocean-lake-loop.htm