{"id":450,"date":"2026-02-13T13:52:40","date_gmt":"2026-02-13T13:52:40","guid":{"rendered":"https:\/\/geobaywatch.com.au\/?page_id=450"},"modified":"2026-02-22T09:01:41","modified_gmt":"2026-02-22T09:01:41","slug":"the-groyne-reef","status":"publish","type":"page","link":"https:\/\/geobaywatch.com.au\/?page_id=450","title":{"rendered":"The Groyne (Reef)"},"content":{"rendered":"\n<div class=\"wp-block-cover alignfull is-light has-custom-content-position is-position-top-left\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"576\" class=\"wp-block-cover__image-background wp-image-469 size-large\" alt=\"\" src=\"https:\/\/geobaywatch.com.au\/wp-content\/uploads\/2026\/02\/vlcsnap-2026-02-22-13h50m43s740-1-1024x576.png\" data-object-fit=\"cover\" srcset=\"https:\/\/geobaywatch.com.au\/wp-content\/uploads\/2026\/02\/vlcsnap-2026-02-22-13h50m43s740-1-1024x576.png 1024w, https:\/\/geobaywatch.com.au\/wp-content\/uploads\/2026\/02\/vlcsnap-2026-02-22-13h50m43s740-1-300x169.png 300w, https:\/\/geobaywatch.com.au\/wp-content\/uploads\/2026\/02\/vlcsnap-2026-02-22-13h50m43s740-1-768x432.png 768w, https:\/\/geobaywatch.com.au\/wp-content\/uploads\/2026\/02\/vlcsnap-2026-02-22-13h50m43s740-1-1536x864.png 1536w, https:\/\/geobaywatch.com.au\/wp-content\/uploads\/2026\/02\/vlcsnap-2026-02-22-13h50m43s740-1.png 1920w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><span aria-hidden=\"true\" class=\"wp-block-cover__background has-background-dim\" style=\"background-color:#63a77d\"><\/span><div class=\"wp-block-cover__inner-container has-global-padding is-layout-constrained wp-block-cover-is-layout-constrained\">\n<p data-wp-context---core-fit-text=\"core\/fit-text::{&quot;fontSize&quot;:&quot;&quot;}\" data-wp-init---core-fit-text=\"core\/fit-text::callbacks.init\" data-wp-interactive data-wp-style--font-size=\"core\/fit-text::context.fontSize\" class=\"has-text-align-left has-fit-text has-large-font-size wp-block-paragraph\"><mark style=\"background-color:rgba(0, 0, 0, 0);color:#ff0000\" class=\"has-inline-color\">The Groyne (Reef)<\/mark><\/p>\n<\/div><\/div>\n\n\n\n<figure class=\"wp-block-boldblocks-youtube-block\"><div id=\"yb-video-cPNyOWSDLxM\" class=\"yb-player\" data-video-id=\"cPNyOWSDLxM\" data-title=\"Play\" style=\"background-image:url(https:\/\/img.youtube.com\/vi\/cPNyOWSDLxM\/hqdefault.jpg)\"><button type=\"button\" class=\"yb-btn-play\"><span class=\"visually-hidden\">Play<\/span><\/button><\/div><figcaption class=\"yb-caption\">\u201cCommon Bullseye\u201d (<a href=\"https:\/\/en.wikipedia.org\/wiki\/Pempheris_multiradiata\">Pempheris multiradiata<\/a>) Swim Survey at The Groyne Reef, BP Beach, Bunbury WA (08 February 2026)<\/figcaption><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">The <a href=\"https:\/\/molinari.au\/family\/atkins\/bunbury\/\">&#8216;Spur&#8217; Groyne<\/a> is a granite-rock structure introduced in the mid-twentieth century to promote wave-breaking and de-energising of the intense Indian Ocean seas and swells from disturbing operations within <a href=\"https:\/\/www.southernports.com.au\/bunbury\/historical-timeline\">Bunbury&#8217;s developing industrial port<\/a>. <\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Six decades of relatively pristine marine conditions have helped seaweed and algae to establish over the hard granite-rock used to construct the groyne. The fierce ocean energy from both northern and southern swells over time have also mobilised the massive 2-tonne boulders to provide an artificial reef around the groyne. The cracks, crevices, and compartments between the rocks comprising the reef provides a comparatively abundant community of fish and other species within just a few metres of rocks jutting from the groyne base.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">The Groyne and its granite-rock reef provide a clear example that the material provides a habitat that supports fish communities. The contrast in plant and animal types found between marine communities at local limestone or introduced granite rock reefs is also evident. Granite&#8217;s utilisation over or around existing limestone shorelines or reefs, and subsequent impacts to local calcareous marine ecological communities, will require the highest level of Australian environmental assessment through a <a href=\"https:\/\/www.dcceew.gov.au\/environment\/epbc\/advice\/assessment-methods\" target=\"_blank\" rel=\"noreferrer noopener\">Public Environment Report (PER) or Environmental Impact Statement (EIS)<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>The &#8216;Spur&#8217; Groyne is a granite-rock structure introduced in the mid-twentieth century to promote wave-breaking and de-energising of the intense Indian Ocean seas and swells from disturbing operations within Bunbury&#8217;s developing industrial port. Six decades of relatively pristine marine conditions have helped seaweed and algae to establish over the hard granite-rock used to construct the [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":460,"parent":0,"menu_order":4,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-450","page","type-page","status-publish","has-post-thumbnail","hentry"],"_links":{"self":[{"href":"https:\/\/geobaywatch.com.au\/index.php?rest_route=\/wp\/v2\/pages\/450","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/geobaywatch.com.au\/index.php?rest_route=\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/geobaywatch.com.au\/index.php?rest_route=\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/geobaywatch.com.au\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/geobaywatch.com.au\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=450"}],"version-history":[{"count":10,"href":"https:\/\/geobaywatch.com.au\/index.php?rest_route=\/wp\/v2\/pages\/450\/revisions"}],"predecessor-version":[{"id":484,"href":"https:\/\/geobaywatch.com.au\/index.php?rest_route=\/wp\/v2\/pages\/450\/revisions\/484"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/geobaywatch.com.au\/index.php?rest_route=\/wp\/v2\/media\/460"}],"wp:attachment":[{"href":"https:\/\/geobaywatch.com.au\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=450"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}