Final answer:
It is true that some volcanoes in certain regions have emerged above sea level, with the volcanic islands of Hawaii, like Mauna Kea, being prominent examples.
Step-by-step explanation:
The statement that some of the volcanoes in the Marina region have reached above sea level is true. Volcanic activity, particularly over mantle "hot spots", can generate a chain of volcanic islands, as seen in the case of the Hawaiian Islands. These islands are formed as the Earth's plates move over a stationary hot spot, causing magma to rise and solidify as it cools, eventually building up to form islands that protrude above the ocean's surface. Some of the highest volcanic mountains, such as Mauna Kea and Mauna Loa in Hawaii, are not only visible above sea level but are also among the tallest peaks on Earth when measured from their base on the ocean floor.