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HTML is good for debugging, but is unsuitable for application use.
Specify the format parameter to change the output format.
To see the non HTML representation of the XML format, set format=xml.
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<?xml version="1.0"?>
<api>
  <query-continue>
    <pageswithprop pwpcontinue="9615" />
  </query-continue>
  <query>
    <pageswithprop>
      <page pageid="9107" ns="0" title="Add a Diving School" value="Create a Page Title for your Diving School" />
      <page pageid="9179" ns="0" title="Add a Diving Area" value="Create a Page Title for Diving Area" />
      <page pageid="9515" ns="10" title="Template:Diving Schools" value="{{{Area}}}, {{{Municipality}}}, {{{Contact Person}}}" />
      <page pageid="9606" ns="0" title="Atlantis Diving Center Volos Sporades Islands" value="Atlantis Diving Center, Volos, Sporades Islands" />
      <page pageid="9607" ns="0" title="Atlantis Diving Center Sithonia North East Aegean" value="Atlantis Diving Center, Sithonia, North East Aegean" />
      <page pageid="9608" ns="0" title="Athos Scuba Aristotelis North East Aegean" value="Athos Scuba, Aristotelis, North East Aegean" />
      <page pageid="9609" ns="0" title="Aquatic Scuba Diving Club Kefalonia Ionian Islands" value="Aquatic Scuba Diving Club, Kefalonia, Ionian Islands" />
      <page pageid="9610" ns="0" title="Aqualand Sithonia North East Aegean" value="Aqualand, Sithonia, North East Aegean" />
      <page pageid="9612" ns="0" title="Anastasios Papanikolaou Preveza Ionian Islands" value="Anastasios Papanikolaou, Preveza, Ionian Islands" />
      <page pageid="9614" ns="0" title="ALMA Diving Center Aristotelis North East Aegean" value="ALMA Diving Center, Aristotelis, North East Aegean" />
    </pageswithprop>
  </query>
</api>