Figure 1.
The locations of M. alfredi encounters in Indonesia submitted to Manta Matcher.
Sites are numbered as follows: 1) Pulau Weh 2) Palau Sangalaki 3) Nusa Penida 4) Gili Islands 5) West Manggarai & Komodo National Park 6) Raja Ampat. (A) Connectivity area and commercial fisheries area (see Figure 2 for enlargement). (B) Region surveyed in Raja Ampat (see Figure 3 for enlargement).
Figure 2.
The connectivity area encompassing Nusa Penida, West Manggarai & Komodo regions and the nearby commercial manta ray landing ports.
Regions and fishing ports are numbered as follows: 1) Nusa Penida 2) Gili Islands 3) Tunjung Luar fishing port 4) Komodo National Park 5) Lamakera fishing port. (A) Manta ray monitoring sites in Nusa Penida and Lombok and nearby Tujung Luar fishing port: 1.1) Small Manta Bay 1.2) Big Manta Bay 1.3) Manta Point 2) Gili Islands 3) Tanjung Luar fishing port. (B) Manta ray monitoring sites in West Mangarrai and Komodo National Park: 4.1) Manta Alley 4.2) German Flag 4.3) Karang Makassar/Manta Point 4.4) Mawan 4.5) The Cauldron 4.6) Tatawa Besar 4.7) Sabolon Kecil.
Figure 3.
A map of the Raja Ampat region to indicate the location of different monitoring sites.
Sites are numbered as follows: 1) Manta Sandy 2) Jetty Arborek 3) Blue Magic 4) Manta Ridge 5) Manta Heaven 6) Dayang.
Table 1.
The survey effort in Nusa Penida, West Manggarai & Komodo, and Raja Ampat regions including sighting records and number of individuals identified.
Figure 4.
Screen grabs of photographs uploaded to the ‘Manta Matcher’ online database documenting M. alfredi movements from Nusa Penida (NP), Bali to Gili Islands (GI), Lombok.
A. Manta ID code INNLP0074A. B. Manta ID code INNLP0057A.
Table 2.
The sighting records of individual rays migrating between Nusa Penida and Gili Islands or West Manggarai & Komodo regions.
Figure 5.
The ‘Manta Matcher’ matching algorithm screen grabs for INNLP0031A showing the top three matched images.
Ranked hit 2 (re-sighting in WM & K) is a true match for the query image of ray INNLP0031A (initial sighting in NP).
Figure 6.
The ‘Manta Matcher’ matching algorithm screen grabs for INNLP0229A showing the top three matched images.
Ranked hit 1 (re-sighting in WM & K) is a true match for the query image of ray INNLP0229A (initial sighting in NP).
Figure 7.
The ‘Manta Matcher’ matching algorithm screen grabs for INNLP0037A showing the top three matched images.
Ranked hit 1 (re-sightings in WM & K) is a true match for the query image of ray INNLP0037A (initial sighting in NP).