I have been looking at ecoregion maps lately and curious why both terrestrial and marine ecoregions are not represented as places alongside the geopolitical places found under Standard places (as opposed to Community Curated). I do appreciate that it is likely a huge undertaking and possibly resource heavy.
In part my interest lies in a desire I had to explore as many ecosystems as I could using World Heritage natural sights as my starting points and try to populate the observations in these areas.
[ed. Heads up, the app.mapx.org and wesr.unepgrid.ch links seem to be slow loaders (data pigs?)]
While looking at the topic elsewhere I found that the UN Environment Programme has what they call the World Environment Situation Room (probably not news to many but news to me) - https://wesr.unep.org/ . As part of this I was exploring their Global Monitoring resource, app.mapx.org , via the Biodiversity link to https://wesr.unepgrid.ch/?project=MX-EDD-M46-8XZ-MAG-RLC&language=en . Drilling into this resource further finds what I thought was particularly interesting. Under the Ecoregions tab, Marine Ecoregions of the World (MEOW) demonstrates places referenced to marine ecosystems rather than geopolitical boundaries. The MEOW is referenced to the journal article BioScience, 57(7):573-583 (2007). https://doi.org/10.1641/B570707 Marine Ecoregions of the World: A Bioregionalization of Coastal and Shelf Areas.
The ecoregions found on the MEOW resource, https://wesr.unepgrid.ch/static.html?views=MX-FR3KW-TRWD1-TRE1G&zoomToViews=true&language=en& , quite well illustrated and could be a good resource for developing Standard Marine Places.
@tonyrebelo should be pleased to find that the Natal, Agulhas Bank, Namaqua marine ecoregions are represented but are hard to see the delineation because the generic ocean colour is grey and the Temperate Southern Africa realm, which they are a part of, is a similar, although not equal, grey. The delineations between Natal, Agulhas Bank is near Cannon Rocks, south of Port Alfred. The delineation between Agulhas Bank and Namaqua is near Platboom Beach north of the Cape of Good Hope.
BTW sidebar - The Terrestrial Ecoregions, Ecoregions2017, resource is https://wesr.unepgrid.ch/static.html?views=MX-305PX-2NDC3-NOO27&zoomToViews=true&language=en&
The Ecoregions2017 references a further revision of the Terrestrial Ecoregions of the World (TEOW)(see Olsen et al., 2001) via BioScience, Volume 67, Issue 6, June 2017, Pages 534–545, https://doi.org/10.1093/biosci/bix014 An Ecoregion-Based Approach to Protecting Half the Terrestrial Realm
Also sidebar - in an article in Current Biology Volume 28, ISSUE 15, P2506-2512.e3, August 06, 2018 https://doi.org/10.1016/j.cub.2018.06.010 The Location and Protection Status of Earth’s Diminishing Marine Wilderness. may be of interest for looking at Marine Wilderness https://wesr.unepgrid.ch/static.html?views=MX-ZVPND-DCYG0-0X4LB&zoomToViews=true&language=en&