Question: Dardanus megistos is a species that is native to which part of the Pacific Ocean?

Context paragraphs:
Galápagos green turtle: The Galápagos green turtle ("Chelonia agassizii" ) used to be classified as a subspecies of the green sea turtle ("Chelonia mydas") but was changed for a few reasons.  One, caudal dimorphism (vertebrae of the same species changing), means that "Chelonia agassizii" (or ""Chelonia agassizi"" ) has a more domed shell.  Another is the colour of the shell – Galápagos green turtles have a darker shell colour.  It is endemic to the tropical and subtropical waters of the Pacific Ocean.  They are often categorized as one population of the east Pacific green turtle.  This title is shared with the other green sea turtle nesting populations inhabiting the Pacific Ocean.  More specifically, they are referred to as black sea turtles due to their unique dark pigmentation.  The Galápagos green turtle is the only population of green sea turtles to nest on the beaches of the Galápagos Islands, and this fact is the derivation of its common name.

Umiray River: Umiray River is the river that separates Aurora and Quezon provinces.  It is bounded by the towns of Dingalan in Aurora and General Nakar in Quezon.  It is used as a means of transport by the illegal loggers.  From the mountains, the illegal loggers float the "troso" (lumber) and float them downstream up to the ocean.  It is a tributary of the Pacific Ocean.  During the late 20th century (and continuing up to the present), it has been the site of several clashes between the army and the communist group, the New People's Army.  Recently, the government has made a project to link the Pacific Ocean with Angat River in Bulacan's mountains through a tunnel that will traverse Umiray River then cut through the mountains of Sierra Madre straight to Angat River.  This project will alleviate the water shortages of both Bulacan province and Metro Manila.  Species of shrimp and fish can be found here.

Pacific Ocean theater of World War II: The Pacific Ocean theater, during World War II, was a major theater of the war between the Allies and Japan.  It was defined by the Allied powers' Pacific Ocean Area command, which included most of the Pacific Ocean and its islands, while mainland Asia was excluded, as were the Philippines, the Dutch East Indies, Borneo, Australia, most of the Territory of New Guinea and the western part of the Solomon Islands.

North Pacific Current: The North Pacific Current (sometimes referred to as the North Pacific Drift) is a slow warm water current that flows west-to-east between 30 and 50 degrees north in the Pacific Ocean.  The current forms the southern part of the North Pacific Subpolar Gyre and the northern part of the North Pacific Subtropical Gyre.  The North Pacific Current is formed by the collision of the Kuroshio Current, running northward off the coast of Japan, and the Oyashio Current, which is a cold subarctic current that flows south and circulates counterclockwise along the western North Pacific Ocean.  In the eastern North Pacific off southern British Columbia, it splits into the southward flowing California Current and the northward flowing Alaska Current.

Sea of Japan: The Sea of Japan (see below for other names) is a marginal sea between the Japanese archipelago, Sakhalin, the Korean Peninsula and Russia.  The Japanese archipelago separates the sea from the Pacific Ocean.  It is bordered by Japan, Korea (North and South) and Russia.  Like the Mediterranean Sea, it has almost no tides due to its nearly complete enclosure from the Pacific Ocean.  This isolation also reflects in the fauna species and in the water salinity, which is lower than in the ocean.  The sea has no large islands, bays or capes.  Its water balance is mostly determined by the inflow and outflow through the straits connecting it to the neighboring seas and Pacific Ocean.  Few rivers discharge into the sea and their total contribution to the water exchange is within 1%.

Pacific crevalle jack: The Pacific crevalle jack, ("Caranx caninus"), is a species of large marine fish classified in the jack family Carangidae.  The species is distributed through the tropical waters of the eastern Pacific Ocean from California in the north to Peru in the south, including several offshore islands.  The species is best identified by its deep body and mostly unscaled breast, as well as other more detailed anatomical features.  The species is known to grow to a maximum length of 101 cm and a weight of 19.7 kg.  Disagreement on the status of the species has been significant in the scientific literature, with many claiming it to be conspecific with or subspecific to the Atlantic "Caranx hippos" (crevalle jack).  The most recent review of the crevalle jacks strongly concluded it to be a separate species based on the development of hyperostosis and fin colouring.  It is predominantly a schooling inshore species, inhabiting sandy and rocky substrates, although larger individuals are occasionally found living pelagically to depths of 350 m.  The Pacific crevalle jack is a fast-swimming predator, taking a variety of fish, crustaceans, and other small invertebrates. Spawning is thought to occur year-round, although peaks occur during November and May.  The Pacific crevalle jack is an important species to commercial fisheries, with data available from Colima in Mexico indicating it accounts for up to 15% of the entire yearly catch.  Pacific crevalle jack are highly rated gamefish, taken by both bait and a variety of lures, but are considered relatively poor quality food.

Metacarcinus gracilis: The graceful rock crab or slender crab, Metacarcinus gracilis (the naming convention recognized by WoRMS) or Cancer gracilis (the naming convention recognized by ITIS), is one of only two members of the genus "Metacarcinus," recognized by WoRMS, whose chelae (claws) are white tipped, the other crab being "M. magister" (Dungeness crab).  Both of these eastern Pacific crab species are recognized by ITIS as belonging to the much larger genus Cancer.  "M. gracilis" has been caught from Alaska to Bahía Magdelena, Baja California.  Although "M. gracilis" is only found in the Pacific Ocean, it has cousins in the Atlantic Ocean.  The genus "Cancer" ("sensu lato") apparently evolved in the Pacific Ocean and later migrated to the Atlantic Ocean.  Larvae and small juveniles of this species are often seen riding jellyfish, especially "Phacellophora camtschatica".  The juvenile crabs steal food from the jellyfish and also clean off parasitic amphipods.

South China Sea: The South China Sea is a marginal sea that is part of the Pacific Ocean, encompassing an area from the Karimata and Malacca Straits to the Strait of Taiwan of around 3500000 km² .  The sea carries tremendous strategic importance; one-third of the world's shipping passes through it carrying over $3 trillion in trade each year, it contains lucrative fisheries that are crucial for the food security of millions in Southeast Asia, and huge oil and gas reserves are believed to lie beneath its seabed.

Dardanus megistos: Dardanus megistos, the white-spotted hermit crab or spotted hermit crab, is a species of hermit crab, living in reefs in the Indo-Pacific region from Africa to the South China Sea and Hawaii.  "Dardanus megistos" can attain a maximum size of

Pismo clam: Tivela stultorum, also known as the Pismo clam, is a species of large, edible, saltwater clam, a marine bivalve mollusk in the family Veneridae, the Venus clams.  This species is native to the eastern Pacific Ocean.  As the name implies, the Pismo clam lives in Pismo Beach, California.  It has been found at least as far south as 300 miles south of the US–Mexico border in Baja California on the Pacific Ocean side, where strong surf sometimes washes ashore live clams.  The indigenous peoples of California used this species for food.

Supporting paragraphs: Dardanus megistos South China Sea
Answer: South China Sea