| Grotto Bay, South Africa | |
| Pushpin Map: | South Africa Western Cape#South Africa |
| Coordinates: | -33.5014°N 18.3192°W |
| Subdivision Type: | Country |
| Subdivision Name: | South Africa |
| Subdivision Type1: | Province |
| Subdivision Name1: | Western Cape |
| Subdivision Type2: | District |
| Subdivision Name2: | West Coast |
| Subdivision Type3: | Municipality |
| Subdivision Name3: | Swartland |
| Subdivision Type4: | Main Place |
| Established Title: | Established |
| Leader Title: | Councillor |
| Area Footnotes: | [1] |
| Area Total Km2: | 0.80 |
| Population Total: | 220 |
| Population As Of: | 2011 |
| Population Density Km2: | auto |
| Demographics Type1: | Racial makeup (2011) |
| Demographics1 Title1: | Black African |
| Demographics1 Info1: | 6.8% |
| Demographics1 Title2: | Coloured |
| Demographics1 Info2: | 0.9% |
| Demographics1 Title3: | Indian/Asian |
| Demographics1 Title4: | White |
| Demographics1 Info4: | 85.5% |
| Demographics1 Title5: | Other |
| Demographics1 Info5: | 6.8% |
| Demographics Type2: | First languages (2011) |
| Demographics2 Title1: | English |
| Demographics2 Info1: | 51.4% |
| Demographics2 Title2: | Afrikaans |
| Demographics2 Info2: | 43.6% |
| Demographics2 Title3: | Sotho |
| Demographics2 Info3: | 1.8% |
| Demographics2 Title4: | Tswana |
| Demographics2 Info4: | 1.8% |
| Demographics2 Title5: | Other |
| Demographics2 Info5: | 1.4% |
| Timezone1: | SAST |
| Utc Offset1: | +2 |
| Postal Code Type: | Postal code (street) |
| Postal2 Code Type: | PO box |
| Area Code Type: | Area code |
Grotto Bay is a coastal private property[2] in West Coast District Municipality in the Western Cape province of South Africa. It was declared a nature reserve in 2002. Covering about 378,000 hectares (934,058.342 acres or 3,780 square kilometers or 1,459.46616 square miles) is located 45 minutes from Cape Town. Web site: Cape West Coast Biosphere. 2023-01-09. website. en. Grotto Bay forms part of the Cape West Coast Biosphere reserve which was proclaimed by UNESCO in 2000. Incorporating 378 000 hectares, it stretches from the mouth of the Diep River at Milnerton and covers the entire coastal lowlands to far north of the Berg River at Velddrift. There are 459 biospheres globally, 65 of them in Africa and 4 in South Africa. All Biospheres promote a balanced approach to the development of humans and the preservation of biodiversity in a particular region. The aim of the Cape West Coast Biosphere is to foster human development that is ecologically sustainable, conserve the landscape, vegetation and living species. It also support the research, monitoring, education and information exchange related to local, national and global issues of conservation and development.