{{Other uses|Moncrieff (disambiguation){{!}}Moncrieff }} {{Use dmy dates|date=January 2018}} {{Use Australian English|date= January 2018}} {{Infobox body of water | name = Moncrieff Bay | image = | caption = | pushpin_map = Australia South Australia | pushpin_map_alt = | pushpin_relief = 1 | pushpin_label_position = bottom | pushpin_map_caption = Location in [[South Australia]] | image_bathymetry = | caption_bathymetry = | location = [[Kangaroo Island]], [[South Australia]] | coords = {{coord| 35.824955 |S| 138.124668 |E|format=dms|type:waterbody_region:AU-SA|display=inline,title}} | coordinates_footnotes = <ref name=LMV>{{cite web |title=Search result for 'Moncrieff Bay, BAY' with the following datasets selected - 'Suburbs and Localities' and 'Gazetteer' |url=http://maps.sa.gov.au/plb/# |work=Location SA Map Viewer |publisher=Government of South Australia |accessdate=27 December 2017 |archive-url=https://web.archive.org/web/20161012010923/http://maps.sa.gov.au/plb/ |archive-date=12 October 2016 |url-status=dead }}</ref> | type = [[Bay]] | etymology = [[Alexander Bain Moncrieff]] | part_of = [[Backstairs Passage]] | inflow = | outflow = | catchment = | basin_countries = [[Australia]] | agency = | designation = Marine park | length = about {{convert|4.5|km}}<ref name=DMH>{{Citation | author1=South Australia. Department of Marine and Harbors (DMH)| title=The Waters of South Australia a series of charts, sailing notes and coastal photographs | date=1985 | publisher=Dept. of Marine and Harbors, South Australia | page= chart 12|isbn=978-0-7243-7603-2}}</ref> | width = about {{convert|1.0|km}}<ref name=DMH/> | area = | depth = | max-depth = about {{convert|7|m}}<ref name=DMH/> | volume = | residence_time = | salinity = | shore = | frozen = | islands = | trenches = | benches = | cities = }} '''Moncrieff Bay''' is a [[bay]] in the Australian state of [[South Australia]] located at the east end of the [[Dudley Peninsula]] on [[Kangaroo Island]] in the gazetted locality of [[Willoughby, South Australia|Willoughby]] overlooking [[Backstairs Passage]] about {{convert|106|km}} south-west of the state capital of [[Adelaide city centre|Adelaide]] and about {{convert|47|km}} south-east of the municipal seat of [[Kingscote, South Australia|Kingscote]].<ref name=LMV/>
It was named in September 1908 after [[Alexander Bain Moncrieff|A. B. Moncrieff]], the Engineer in Chief of the Department of Marine & Harbors. It was one of eleven places in South Australia so named at the time as part of an effort “to name some of the more prominent features on the coast of South Australia which had been left blank in the Admiralty and land charts…”<ref name=name>{{cite news |url=http://nla.gov.au/nla.news-article58938352 |title=THE LATEST PLACE NAMING. |newspaper=[[The Register (Adelaide)]] |volume=LXXIII |issue=19,297 |location=South Australia |date=17 September 1908 |accessdate=27 December 2017 |page=6 |via=National Library of Australia}}</ref>
It consists of the section of coastline which faces east and runs in a north-south direction between the headlands of [[Cape St Albans]] in the north and [[Cape Willoughby]] in the south. It includes one inlet – [[Pink Bay]].<ref name=DMH/><ref name="LMV-PB">{{cite web|title=Search result for 'Pink Bay, Bay' with the following datasets selected - 'Suburbs and Localities' and 'Gazetteer'|url=http://location.sa.gov.au/viewer/|website=Location SA Map Viewer|publisher=Government of South Australia|accessdate=2 January 2018}}</ref> The coastline is described as “rugged” and as “predominantly composed of steep, 100 m high vegetated bluffs.”<ref name="KI-56"/> Water depths within the bay are less than {{convert|10|m}} with a maximum depth of {{convert|7|m}} shown as single sounding in an official source.<ref name=DMH/>
The bay’s coastline is described as being “boulder beaches’ with the exception of two beaches composed of sand at its southern end. The beach at Pink Bay in the west has a length of {{convert|40|m}} while the other one known as 'Cape Willoughby' in the east has a length of {{convert|150|m}}. Both are unpatrolled swimming beaches which are considered by [[Surf Life Saving Australia]] to be respectively ‘least hazardous’ and ‘moderately hazardous’ while the "boulder beaches" being considered to be "extremely hazardous."<ref name="KI-56">{{cite web |title= Pink Bay SA |url=https://beachsafe.org.au/beach/sa/kangaroo-island/willoughby/pink-bay |publisher= Surf Life Saving Australia |accessdate=1 January 2018}}</ref><ref name="KI-57">{{cite web |title= Cape Willoughby SA |url=https://beachsafe.org.au/beach/sa/kangaroo-island/willoughby/cape-willoughby |publisher= Surf Life Saving Australia |accessdate=1 January 2018}}</ref>
The bay’s bottom is described in 2002 by divers doing a fish population survey as consisting of “blocks (1-2 m) and boulders going to sand at 5 m depth” and there was a “rocky bottom at southern end of (the) bay 250 m each side of beach.” Also, the following algae genera and species were considered to be the dominant alga present in parts of the bay surveyed - genus ''[[Ecklonia]]'', genus ''[[Cystophora (alga)| Cystophora]]'' represented by C.siliquosa, C.moniliformis, and C. intermedia, genus ''Acrocarpia'' and ''[[List of Sargassum species|Sargassum fallax]]'' from the family ''[[Sargassaceae]]''.<ref name="GroperKI">{{cite web|last1=Shepherd|first1=Scoresby A.|last2=Brook|first2=James|last3=Brown|first3=Adrian|title=A PRELIMINARY SURVEY OF THE WESTERN BLUE GROPER ON KANGAROO ISLAND |url=http://www.reefwatch.asn.au/PDF/Groper%20KI.pdf |publisher=[[Conservation Council of South Australia]] |accessdate=19 January 2018|page=5}}</ref>
As of late 2012, the waters adjoining its shoreline are within a habitat protection zone in the [[protected area]] known as the [[Encounter Marine Park]].<ref>{{cite web|title=Encounter Marine Park Management plan summary|url=http://www.environment.sa.gov.au/files/b3e51be9-f461-47c9-b106-a11700a19006/mp-gen-15encounter-managementplan.pdf|publisher=Department of Environment, Water and Natural Resources|accessdate=2 January 2018|page=38 of 39}}</ref>
==References== {{reflist}} {{Bays of South Australia|state=collapsed}} {{Kangaroo Island|state=collapsed}}
[[Category:Bays of South Australia]] [[Category:Dudley Peninsula]] [[Category:Backstairs Passage]]