30°S latitude and 150°E longitude is located in the Pacific Ocean, specifically in the South Pacific Ocean, east of Australia.

Here's a breakdown:

* 30°S latitude: This line runs parallel to the equator, about one-third of the way from the equator to the South Pole.

* 150°E longitude: This line runs north-south from the North Pole to the South Pole, passing through the eastern half of Australia.

This specific location is within the Tasman Sea, between Australia and New Zealand. It's a relatively remote area with no major landmasses, but it's an important shipping route and home to diverse marine life.