Southern Bali Peninsula and Adjacent Slope IMMA

Size in Square Kilometres

2 239 km2

Qualifying Species and Criteria

Bryde’s whale – Balaenoptera edeni

Criterion C (ii)

Spinner dolphin – Stenella longirostris 

Criterion C (ii)

Marine Mammal Diversity 

Criterion D (ii)

Balaenoptera edeni, Physeter macrocephalus, Stenella longirostris, Balaenoptera musculus, Balaenoptera omurai, Feresa attenuata, Globicephala macrorhynchus, Grampus griseus, Lagenodelphis hosei, Megaptera novaeangliae, Orcinus orca, Pseudorca crassidens, Stenella attenuata, Steno bredanensis, Tursiops truncatus

Summary

The IMMA is flanked on both the eastern and western parts of the Peninsula by steep bathymetric gradients and undersea canyons. Seasonal upwelling exists at the southwestern section around the canyon perimeter and the steep bathymetry gradients. The bathymetry steeply drops from 200 m to 1,000 m in just 5 km. Bryde’s whale (Balaenoptera edeni) have been observed feeding at the south-western extend of the bathymetric slope. Spinner dolphins (Stenella longirostris) are often sighted feeding and aggregating above the south-eastern parts of the canyon. Fourteen other cetacean species have been observed (including Physeter macrocephalus, Balaenoptera borealis, Grampus griseus, Lagenodelphis hosei, Megaptera novaeangliae, Orcinus orca, Balaenoptera musculus and Balaenoptera omurai).

Description of Qualifying Criteria

Criterion C: Key Life Cycle Activities

Sub-criterion Cii: Feeding Areas

Bryde’s whale (Balaenoptera edeni) have been observed feeding at the southwestern edges of the sloping bathymetry gradient around the Bali Peninsula (Mustika et al. 2016), as well as spinner dolphins (Stenella longirostris) have often been sighted feeding above the south-eastern canyon systems.

Criterion D: special Attributes  

Sub-criterion Dii: Diversity

The IMMA hosts at least 18 cetacean species regularly observed within the area from the limited surveys undertaken to date (Mustika et al. 2016), including Balaenoptera edeni and Stenella longirostris, Balaenoptera borealis, Balaenoptera musculus, Balaenoptera omurai, Feresa attenuata, Globicephala macrorhynchus, Grampus griseus, Lagenodelphis hosei, Megaptera novaeangliae, Orcinus orca, Pseudorca crassidens, Stenella attenuata, Steno bredanensis and Tursiops truncatus.

Supporting Information

Kahn, B. 2018. Personal communication

Kadarisman, H.P. 2018. Personal communication.

Mustika, P. L., Williams, R., Kadarisman, H. P., Purba, A. O. and Maharta, I.P.R.F. 2016. Final report of marine mammal survey at the Peninsular waters of Bali. Townsville: for Conservation International Indonesia.

Downloads

Download the full account of the Southern Bali Peninsula and Adjacent Slope IMMA using the Fact Sheet button below:

To make a request to download the GIS Layer (shapefile) for the Southern Bali Peninsula and Adjacent Slope IMMA please complete the following Contact Form:

* Required fields



(*)