You are looking at the HTML representation of the XML format.
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.
See the complete documentation, or API help for more information. 
<?xml version="1.0"?>
<api>
  <query-continue>
    <alllinks galcontinue="Balenes" />
  </query-continue>
  <query>
    <pages>
      <page ns="0" title="Badia de Montjoi" missing="" />
      <page ns="0" title="Badia de Roses" missing="" />
      <page ns="0" title="Baladriga" missing="" />
      <page ns="0" title="Baldiri Llorens" missing="" />
      <page ns="0" title="Baldiri Llorens Mateu" missing="" />
      <page ns="0" title="Baldiri Llorens Palau" missing="" />
      <page ns="0" title="Baldiri Llorens Romañach" missing="" />
      <page ns="0" title="Baldiri Ricart Argelés" missing="" />
      <page pageid="3944" ns="0" title="Baldiri Llorens Rahola" />
      <page pageid="330" ns="0" title="Baldriga cendrosa (&quot;Calonectris diomedea&quot;)" />
    </pages>
  </query>
</api>