This is not possible via the documented methods/properties, but you may get access to these properties.
Step #1: Each cluster has a
markers_
-property, which is an array that contains all the markers of the cluster. Iterate over all clusters and check if themarkers
_-array contains the wanted markerStep #2: when you've found the cluster with the wanted marker, access the property
clusterIcon_.div_
of the cluster, that's the element that represents the cluster-icon//attach listener to clusteringend-event google.maps.event.addListener(markerClustererInstance,'clusteringend',function(){ //iterate over all clusters var clusters=this.getClusters(); for(var i = 0; i < clusters.length;++i){ if(clusters[i].markers_.length > 1 && clusters[i].clusterIcon_.div_){ // clusters[i].clusterIcon_.div_ is the HTMLElement // that contains the wanted clusterIcon, // you should at first reset here recently applied changes if(clusters[i].markers_.indexOf(wantedMarker)>-1){ //the marker has been found, do something with it } } }});
But Note: The cluster-icon is not a
google.maps.Marker
, you can't simply apply an animation as you may do it with a native marker. Furthermore: Animations that will modify the position of the cluster-icon (e.g. bounce) may interfere with the markerClusterer, I would suggest to use effects that can be applied via color-changes or changes of the background-image(the cluster-icons you see are the background-images of the div).