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Verde Island Passage | |
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Location | |
Coordinates | 13°34′31″N120°52′3″E / 13.57528°N 120.86750°E |
Type | strait |
Etymology | Verde Island |
The Verde Island Passage is a strait that separates the islands of Luzon and Mindoro in the Philippines, connecting the West Philippine Sea with the Tayabas Bay and the Sibuyan Sea beyond. Traditionally, the sea lane has been one of the busiest in the Philippines because it acts as a corridor from the Port of Manila to the Visayas and Mindanao in the south. [1] A network of ferry routes cross the passage and connect the surrounding provinces of Batangas, Marinduque, Occidental Mindoro, Oriental Mindoro and Romblon. [1] The Verde Island Passage is identified as a site of highest marine biodiversity importance in the Coral Triangle. [2] The 1.14 million hectare passage is extremely rich in marine biodiversity and has been called "Center of the Center of Marine Shorefish Biodiversity" with various conservation groups and local government units pushing for its nomination as a UNESCO World Heritage Site. [1] [3]
Verde Island, located right in the center of the strait, is a popular diving location in the Philippines due to its clear waters and renowned biodiverse marine life. Daily trips for scuba divers are made from Puerto Galera.
The wreckage of a Spanish galleon that sunk in 1620 is located in the South of the passage. Most of the ship's cargo was salvaged from the wreckage between 1970 and 1990. Today, nothing remains of the wreck except for a few shards of porcelain and some larger pieces of terracotta jars. The keel was removed and is now located in Puerto Galera for conservation. However, some timbers from the keel remained and were left to rot at a depth of 6 meters in front of Sabang Beach.
A team of marine conservationists declared in 2006 that the Philippines is the Center of Marine Biodiversity in the world and Verde Island Passage as the "Center of the Center of Marine Shorefish Biodiversity". [4]
Many threatened species which include sea turtles like hawksbills, olive ridleys, and green turtles; humphead wrasses, giant groupers and giant clams are present in the Verde Island Passage. [5] However, there are no enforcement of ordinances and over-fishing is common. [6] A short-lived 'park fee' scheme for the Verde Island drop-off dive site was soon dropped when it was discovered that the revenue was being used to buy better fishing gear and hence removing fish at a higher rate. Several species such as the humphead wrasse have low catches frequently reporting 0 catches. [5] It was particularly noted the rare red fin wrasse ( Cirrhilabrus rubripinnis ) thrives in Verde Island.
There is a complete moratorium of all types of fishing in the Batangas Bays and around Mindoro island. The fish sold in the markets of Puerto Galera comes from distance places such as Romblon.
The other main contributor to sustained marine diversity is the damage caused by commercial vessels and other ferries using the passage on a daily basis. [7] It is common that commercial vehicles discharge various pollutants into the waters on which the municipalities and other local bodies have no control. In stormy times, large vehicles are seen anchoring to the corals in the area causing damage to them. The conservation message has to be put cross to major commercial shipping lines and the crews need to be educated on the diversity of the Verde Passage and the dire need for its protection. There are other major issues that affect the sustainability of the Verde Passage. The heavy use of agro-chemicals (pesticides and chemical fertilizer) in the up-stream of Batangas River and the resultant wash off down the river and finally into the Batangas Bay is a serious issue that warrants attention. The discharge of urban waste and grey water in Puerto Galera and other urban areas into the numerous bays around the passage is yet another major issue. The treatment of grey water and septic effluent is not practiced which is a huge concern. The growing tourism aggravates this problem.
The area has more than 300 species of corals, which is considered one of the largest concentrations of corals in the country, or possibly, the whole world. Coral health is generally good, though the effects of global warming and increased pollution, may still lead to a drop in diversity. The Verde Island passage is located next to Batangas Bay which is rapidly becoming a major refining and petrol chemical center in the Philippines. Until now, no infrastructure is in place to contain a major oil, or chemical spill. [8]
The Passage is recognised for its marine diversity with an awareness for the need to protect the strait from over fishing through conversation programs and talks from academics. [9] [10] Marine parks and ocean guards have also been created to increase the conversation of wildlife. [10] [1] Although, academics have made calls for more to be done to protect the Verde Island Passage while still supporting the local population. [6]
Oriental Mindoro, officially the Province of Oriental Mindoro, is a province in the Philippines located on the island of Mindoro under Mimaropa region in Luzon, about 140 kilometres (87 mi) southwest of Manila. The province is bordered by the Verde Island Passage and the rest of Batangas to the north, by Marinduque, Maestre de Campo Island, Tablas Strait and the rest of Romblon to the east, by Semirara and the rest of Caluya Islands, Antique to the south, and by Occidental Mindoro to the west. Its provincial capital Calapan, the only city in the island, is the most-populous in the province, and Mimaropa's regional center.
Occidental Mindoro, officially the Province of Occidental Mindoro, is a province in the Philippines located in the Mimaropa region. The province occupies the western half of the island of Mindoro. Its capital is Mamburao, but the most populous municipality is San Jose. Sablayan is its largest municipality in terms of area, occupying almost half of the entire province. As of 2020, Occidental Mindoro has 525,354 inhabitants.
Puerto Galera, officially the Municipality of Puerto Galera, is a 1st class municipality in the province of Oriental Mindoro, Philippines. According to the 2020 census, it has a population of 41,961 people.
The humphead wrasse is a large species of wrasse mainly found on coral reefs in the Indo-Pacific region. It is also known as the Māori wrasse, Napoleon wrasse, Napoleon fish, so mei 蘇眉 (Cantonese), mameng (Filipino), and merer in the Pohnpeian language of the Caroline Islands.
Southeast Asian coral reefs have the highest levels of biodiversity for the world's marine ecosystems. They serve many functions, such as forming the livelihood for subsistence fishermen and even function as jewelry and construction materials. Corals inhabit coastal waters off of every continent except Antarctica, with an abundance of reefs residing along Southeast Asian coastline in several countries including Indonesia, the Philippines, and Thailand. Coral reefs are developed by the carbonate-based skeletons of a variety of animals and algae. Slowly and over time, the reefs build up to the surface in oceans. Coral reefs are found in shallow, warm salt water. The sunlight filters through clear water and allows microscopic organisms to live and reproduce. Coral reefs are actually composed of tiny, fragile animals known as coral polyps. Coral reefs are significantly important because of the biodiversity. Although the number of fish are decreasing, the remaining coral reefs contain more unique sea creatures. The variety of species living on a coral reef is greater than anywhere else in the world. An estimation of 70-90% of fish caught are dependent on coral reefs in Southeast Asia and reefs support over 25% of all known marine species.
The Tubbataha Natural Park, also known as the Tubbataha Reefs Natural Park, is a protected area of the Philippines located in the middle of the Sulu Sea. The marine and bird sanctuary consists of two huge atolls and the smaller Jessie Beazley Reef covering a total area of 97,030 hectares. It is located 150 kilometres (93 mi) southeast of Puerto Princesa, the capital of Palawan. The uninhabited islands and reefs are part of the island municipality of Cagayancillo, located roughly 130 kilometers (81 mi) to the northeast of the reef.
The green humphead parrotfish is the largest species of parrotfish, growing to lengths of 1.5 m (4.9 ft) and weighing up to 75 kg (165 lb).
Raja Ampat, or the Four Kings, is an archipelago located off of the northwest tip of Bird's Head Peninsula, Southwest Papua province, Indonesia. It comprises over 1,500 small islands, cays, and shoals around the four main islands of Misool, Salawati, Batanta, and Waigeo, and the smaller island of Kofiau.
Pescador Island is a small limestone island located in the Tañon Strait, a few kilometres from the western coast of the island of Cebu in the Philippines. It is under the jurisdiction of the municipality of Moalboal.
Apo Reef is a coral reef system in the Philippines situated in the western waters of Occidental Mindoro province in the Mindoro Strait. Encompassing 34 square kilometres (13 sq mi), it is considered the world's second-largest contiguous coral reef system, and is the largest in the country. The reef and its surrounding waters are protected areas administered as the Apo Reef Natural Park (ARNP). It is one of the best known and most popular diving regions in the country, and is in the tentative list for UNESCO World Heritage Sites.
The Coral Triangle (CT) is a roughly triangular area in the tropical waters around the Philippines, Indonesia, Malaysia, Papua New Guinea, the Solomon Islands and Timor-Leste. This area contains at least 500 species of reef-building corals in each ecoregion. The Coral Triangle is located between the Pacific and Indian oceans and encompasses portions of two biogeographic regions: the Indonesian-Philippines Region, and the Far Southwestern Pacific Region. As one of eight major coral reef zones in the world, the Coral Triangle is recognized as a global centre of marine biodiversity and a global priority for conservation. Its biological resources make it a global hotspot of marine biodiversity. Known as the "Amazon of the seas", it covers 5.7 million square kilometres (2,200,000 sq mi) of ocean waters. It contains more than 76% of the world's shallow-water reef-building coral species, 37% of its reef fish species, 50% of its razor clam species, six out of seven of the world's sea turtle species, and the world's largest mangrove forest. In 2014, the Asian Development Bank (ADB) reported that the gross domestic product of the marine ecosystem in the Coral Triangle is roughly $1.2 trillion per year and provides food to over 120 million people. According to the Coral Triangle Knowledge Network, the region annually brings in about $3 billion in foreign exchange income from fisheries exports, and another $3 billion from coastal tourism revenues.
Human activities have substantial impact on coral reefs, contributing to their worldwide decline. Damaging activities encompass coral mining, pollution, overfishing, blast fishing, as well as the excavation of canals and access points to islands and bays. Additional threats comprise disease, destructive fishing practices, and the warming of oceans.[2] Furthermore, the ocean's function as a carbon dioxide sink, alterations in the atmosphere, ultraviolet light, ocean acidification, viral infections, the repercussions of dust storms transporting agents to distant reefs, pollutants, and algal blooms represent some of the factors exerting influence on coral reefs. Importantly, the jeopardy faced by coral reefs extends far beyond coastal regions. The ramifications of climate change, notably global warming, induce an elevation in ocean temperatures that triggers coral bleaching—a potentially lethal phenomenon for coral ecosystems.
Angel Chua Alcala was a Filipino biologist who was named a National Scientist of the Philippines in 2014. Alcala is known for his fieldwork to build sanctuaries and to promote biodiversity in the aquatic ecosystems of the Philippines. He was the Chairman of the Board of Advisers at the Angelo King Center for Research and Environmental Management located in Silliman University. Alcala published more than 200 peer-reviewed articles and books and his biological contributions to the environment and ecosystems have made him a renowned figure of natural sciences in the Philippines.
The Batangas International Port or locally known as the Batangas Pier is a seaport in Barangay Santa Clara, Batangas City primarily serving the Calabarzon region of the Philippines. The seaport covers an area of about 150 hectares.
The Danajon Bank is the only double barrier reef in the Philippines, which is a very rare geological formation, which is located in the Camotes Sea. It comprises two sets of large coral reefs that formed offshore on a submarine ridge due to a combination of favorable tidal currents and coral growth in the area.
The Mindoro–Batangas Super Bridge is a proposed 14 km (8.7 mi) pontoon bridge which is planned to connect the Philippine province of Batangas and Mindoro island.
Malampaya Sound is a protected inlet of the South China Sea on the northwestern coast of Palawan Island in western Philippines. It is a geographic sound consisting of a complex of sheltered bays, coves, estuaries and islands separated from the sea to the west by the Copoas Peninsula. The sound is within the municipality of Taytay and is an important feature for the ecology and economy of the province of Palawan. It is considered one of the finest natural harbors in the Philippines and one of Palawan's richest fishing grounds.
Chromis gunting is a species of marine fish of the damselfishes in the family Pomacentridae. This species was first described in 2019, along with Chromis bowesi and Chromis hangganan, discovered and known only from Verde Island Passage, in Puerto Galera and Batangas, in the Philippines. It is characterized by 11 dorsal fin rays, 11-12 anal fin rays, 16-17 pectoral fin ray, 3 procurrent caudal fin rays, 14-16 tubed lateral-line scales, 19-20 gill rakers. The species body length is 2.1-2.2 standard length, with a light brown colored body when fresh that has a silver area on the anterior end and a bilateral black margin on the exterior side of the tail.
Chromis bowesi, known as the rhomboid chromis, is a species of damselfish in the family Pomacentridae. This species was first described in 2019 by Luiz A. Rocha and colleagues, along with Chromis hangganan and Chromis gunting, discovered and known from Verde Island, Batangas Bay and Puerto Galera Bay, in the Philippines.
The Mayotte Marine Natural Park is a marine park surrounding Mayotte, a French overseas region. Mayotte is part of the Comoro Islands archipelago, which lies within the Mozambique Channel in the western Indian Ocean. Established in 2010, the park covers the entirety of Mayotte's territorial waters and exclusive economic zone. It is contiguous with the Glorioso Islands Marine Natural Park, which was established two years later.