Parks Victoria - Marine Mapping Education Resource Kit
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Activity 1: Location, Location
Part B: Navigating to Points of Interest in Point Addis Marine National Park

Objective: To use coordinates to navigate to a series of points of interest within Point Addis Marine National Park.

Materials:

  • An interactive map of Point Addis Marine National Park Map of Victoria showing grid in intervals of minutes with further divisions of 10 second intervals (Remember: 1 minute = 60 seconds) to allow for even more accurate positioning.
  • Table giving coordinates to Points of Interest within Point Addis Marine National Park

Method:

  1. Use the coordinates provided in the table below to find a number of points of interest within Point Addis Marine National Park
  2. Note that the coordinates are provided with Longitude (the lines that run north south) first then Latitude (lines that run east west) second.
  3. Read the description of the points of interest found at these locations
  4. Record the letter found at each point. When completed these will spell a word that represents one of Victoria’s most amazing marine animals. The letters can only be seen if you are very close to the correct coordinates. There are also some other letters which are not part of the word, these are found at some incorrect coordinates.

Table 2: Points of Interest with the Point Addis Marine National Park

Points of Interest Coordinates Description of Point of Interest
1. Holocene river bed

38o25’15”
144o12’42”

The Anglesea River once flowed through this area during periods of time when sea level was much lower than today.
2.Ingoldsby reef

38o24 ’ 24”
144o13’36”

The Ingoldsby Reef is often visible in the middle of the Point Addis Marine National Park and is a good location for diving and snorkelling under calm conditions.
3. Addis rock platform

38o23’38”
144o15’25”

Where the reefs are exposed to the rise and fall of the tide large platforms covered in plants like Neptune’s Necklace provide an important habitat for many species of molluscs and crustaceans.
4. Rhodolith beds

38o25’45”
144o14’14”

Previously unknown in this area large beds of the unusual marine red algae rhodoliths are found in section of the Marine National Park. These slow growing pink plants roll around on the sea floor and grow very slowly.
5. Sponge City 1

38o26’36”
144o14’15”

Large sponges attach themselves to hard reefs and filter food from the water flowing around them. Many sponges are brightly coloured.
6. Sponge City 2

38o25’15”
144o16’38”

In protected areas of reef many different species of sponges compete for space and water flow creating a complex sea floor habitat.
7. Sandy plains

38o27’23”
144o13’38”

In offshore areas vast drifts of sand move slowly along the sea floor as large ripples. Because of the constant movement only animals that can live in the sand or above it are found.
8. Kelp forest

38o24’30”
144o15’30”

A variety of species of brown algae form a forest canopy over the reefs creating shelter for smaller plants and animals including fish.
9. Deep sands

38o25’40”
144o16’45”

In deeper sections sands are less disturbed and support unusual communities of sponges and other filter feeding animals.

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