Biodiversity Risks near Cable Landing site in Maldives: The habitat in the vicinity of the proposed cable landing site (CLS) at Hulhumale and near shore vicinity is modified. Hulhumale´ is a reclaimed island, the average elevation is higher (~+2 mMSL) than the natural islands of Maldives. The crest of the beach is lined with concrete-filled bags as an erosion protection measure. There are at least nine underwater cables making landfall very near to the project area.
The Maldives Atoll chain runs some 800 km north to south. As an atoll nation that is 99% ocean, the Republic of Maldives is a country rich in marine biodiversity. It contains about 4,500 km2 of coral reefs, which is about 3% of the world’s total coral reef area, with over 250 recorded species of coral, over 1,100 species of fish, five species of marine turtle and at least 20 species of marine mammals. There are eight Marine Protected Areas (MPAs) in North Male´ Atoll. The nearest MPA to the CLS site is Banana Reef located about 2 km to the north-east (NE). All other MPAs are outside a five km radius of the project site. Nearest Environmentally Sensitive Area to the project site is Masgiri (located about 4.8 km NE of Hulhumale´).
Because an ESIA is yet to be conducted for the SMW6 project, preliminary biodiversity baseline information was reviewed based on the 2020 EIA study report prepared for the recently constructed “Maldives – Sri Lanka Cable (MSC) Project: Maldives Landing Component” for which the cable landing site is in the vicinity of the proposed CLS location for SMW6 project. The ESIA referenced five species of sea turtles (1 CR, 2 EN and 2 VU), and one fish (EN) in local waters. Additionally, the International Union for Conservation of Nature (IUCN) lists at least seven pelagic sharks/rays that are critically endangered (CR) or endangered (EN) and that are predicted to occur. The ESIA reports that the Maldives Marine Research Institute has stated that the proposed area near Hulhumale is not particularly rich in coral life. No EN or CR bird species are likely to be impacted by the project.
Based on this preliminary review, it is assessed that, due to the project development, limited sessile marine life within the footprint of the cable laying route would be lost and construction may damage corals and other marine life if proper care is not given during the deployment of the cable on the reef or if the cable is not securely clamped to the reef. Primary mitigation measures would include avoidance of major coral structures, not allowing work outside the immediate cable route, relocation of major coral colonies from the footprint; and implementing practices minimize pollution. A monitoring program would also be required. During mobilization of the cable laying vessel to the site, there is a risk of invasive alien species introduction to the local ecosystem either from the ship’s hull or discharge of ballast water. The assessment of these marine biodiversity and ecosystem services risks and impacts will be integrated in the scope of ESIA studies discussed under PS 1 and included in ESAP #2. The ESIA will include relevant mitigations that meet PS6 objectives and applicable requirements.
Preliminary Marine Biodiversity Assessment of SMW6 Route
Segment 1: 9683 km long submarine cable proposed between Singapore to Ras Ghareb in Egypt
From Singapore, the coastal and marine environments of the Andaman and Nicobar Islands (ANI) cover coral reefs and seagrass beds. Reefs include fringing, patchy, and barrier reefs which would be considered to be natural habitat. There are also Marine Protected Areas (MPAs) in the ANI that would need to be surveyed and investigated as to how they may relate to the cable location in the proposed ESIA study for the core line. Likewise, there are Important Marine Mammal Areas (IMMA) along the narrow continental shelf of Southwest Sri Lanka, as well as the coast of Maldives Archipelago, including 23 cetacean species, with the Blue Whale (Balaenoptera musculus) being Endangered (EN).
The cable route from the ANI through the Gulf of Aden traverses the Bay of Bengal and the Arabian Sea. The cable will pass through the Red Sea, which is a biodiversity “hotspot”. The coast of the Red Sea is rimmed by shallow submarine shelves and extensive fringing reef systems. Red Sea fringing reef platforms are over 5,000 years old, and the entire coastal reef complex extends along some 2,000 km of shoreline with the reef complex growing directly from the shoreline. The Red Sea also contains numerous offshore reefs. Included in this category are atoll-like rings of coral, elongated coral ridges that rise abruptly from considerable depths on both sides, and peculiar complex reef patterns.
The marine biota of Red Sea coral reefs is characterized by high endemism. For example, of the 1,200 or so coral reef fish species recorded, about 10% are endemic. About 300 hard coral species have been recorded from the Red Sea as a whole. The Egyptian coast alone supports about 200 species of reef building corals belonging to almost 50 genera. A Critical Habitat (CH) assessment may be warranted, depending on the final cable alignment. The cable will also pass close to the Northern Red Sea Islands IMMA.
A growing number of MPAs have been established in the Red Sea. The narrow Gulf of Suez, through which the cable will be laid, is the most productive fishing ground along the Egyptian sector of Red Sea, where more than 64% of Egyptian Red Sea fish production was harvested from it. Potential snagging risk of the cable from bottom trawl gear and commerce vessel anchors could be high.
The other two segments are Segment 2 which is a land route with two underground cable lines of length 411km and 484 km between Ras Ghareb and Port Said in Egypt and Segment 3 which is a 3162 km long submarine cable proposed between Port Said in Egypt to Marseille in France. For Segment 2 it is expected that the core line ESIA study will assess the terrestrial ecological risks and impacts along the proposed alignment for both the cable alignments and accordingly inform the selection of the best alignment options that protects the terrestrial biodiversity values. While for Segment 3, there appears to be no remarkable marine biodiversity features for the cable route through the Mediterranean Sea in terms of benthic features, there are, however, tuna spawning areas. It is expected that the core line ESIA study will assess potential impacts on spawning areas of tuna and other economically important species within the cable route.
The assessment of marine biodiversity and ecosystem services risks and impacts associated with the SMW6 core line will be integrated in the scope of ESIA studies discussed under PS 1 and included in ESAP #2. The ESIA will include relevant maps showing the latest MPAs and IMMAs, which will need to be surveyed as to how they may relate to the cable location and will include mitigations that meet PS6 objectives and applicable requirements.