Within <divesite> the two elements <divebase> (for full description of a dive base), and <site> (for describing a dive site) do exist. Both elements can be repeated any times. First, all <divebase>s must be listed, then follow all dive <site>s.

<divebase>
    <name>
    <aliasname>
    <address>
        <street>
        <city>
        <postcode>
        <country>
        <province>
    <contact>
        <language>
        <phone>
        <mobilephone>
        <fax>
        <email>
        <homepage>
    <priceperdive>
    <pricedivepackage>
    <guide>
    <rating>
        <datetime>
        <ratingvalue>
    <link/> (for forward cross-referencing  <site> objects)
    <notes>
        <para>
        <link/> (for cross-referencing <audio>,  <image>, and  <video> objects)
<site>
    <name>
    <aliasname>
    <link/> (for cross-referencing <divebase> elements)
    <environment>
    <geography>
        <address>
            <street>
            <city>
            <postcode>
            <country>
            <province>
        <location>
        <latitude>
        <longitude>
        <altitude>
        <timezone>
    <ecology>
        <fauna>
            <invertebrata>
                <porifera>
                    <species>
                        <trivialname>
                        <scientificname>
                        <lightintensity>
                        <age>
                        <abundance>
                        <dominance>
                        <sex>
                        <size>
                        <notes>
                            <para>
                            <link/> (for cross-referencing  <audio>,  <image>, and  <video> objects)
                <coelenterata>
                    <all elements which appear under <porifera> can also stand here>
                <cnidaria>
                    <all elements which appear under <porifera> can also stand here>
                <ctenophora>
                    <all elements which appear under <porifera> can also stand here>
                <plathelminthes>
                    <all elements which appear under <porifera> can also stand here>
                <bryozoa>
                    <all elements which appear under <porifera> can also stand here>
                <phoronidea>
                    <all elements which appear under <porifera> can also stand here>
                <ascidiacea>
                    <all elements which appear under <porifera> can also stand here>
                <echinodermata>
                    <all elements which appear under <porifera> can also stand here>
                <mollusca>
                    <all elements which appear under <porifera> can also stand here>
                <crustacea>
                    <all elements which appear under <porifera> can also stand here>
                <invertebratavarious>
                    <all elements which appear under <porifera> can also stand here>
            <vertebrata>
                <chondrichthyes>
                    <all elements which appear under <porifera> can also stand here>
                <osteichthyes>
                    <all elements which appear under <porifera> can also stand here>
                <mammalia>
                    <all elements which appear under <porifera> can also stand here>
                <amphibia>
                    <all elements which appear under <porifera> can also stand here>
                <reptilia>
                    <all elements which appear under <porifera> can also stand here>
                <vertebratavarious>
                    <all elements which appear under <porifera> can also stand here>
        <flora>
            <rhodophyceae>
                <species>
                    <trivialname>
                    <scientificname>
                    <lightintensity>
                    <age>
                    <abundance>
                    <dominance>
                    <sex>
                    <lifestage>
                    <size>
                    <notes>
                        <para>
                        <link/> (for cross-referencing  <audio>,  <image>, and  <video> objects)
            <phaeophyceae>
                <all elements which appear under <rhodophyceae> can also stand here>
            <chlorophyceae>
                <all elements which appear under <rhodophyceae> can also stand here>
            <spermatophyta>
                <all elements which appear under <rhodophyceae> can also stand here>
            <floravarious>
                <all elements which appear under <rhodophyceae> can also stand here>
    <sitedata>
        <arealength>
        <areawidth>
        <averagevisibility>
        <bottom>
        <density>
        <difficulty>
        <globallightintensity>
        <maximumdepth>
        <maximumvisibility>
        <minimumdepth>
        <minimumvisibility>
        <terrain>
        <wreck>
            

(the element <wreck> can also appear within the following elements <indoor>, <lake>, <river>, or <shore>, and is not listed there anymore)

            <name>
            <aliasname>
            <shiptype>
            <nationality>
            <built>
                <shipyard>
                <launchingdate>
                    <datetime>
            <shipdimension>
                <length>
                <beam>
                <draught>
                <displacement>
                <tonnage>
            <sunk>
                <datetime>
            <notes>
                <para>
                <link/> (for cross-referencing  <audio>,  <image>, and  <video> objects)
        <cave>
            <name>
            <aliasname>
            <notes>
                <para>
                <link/> (for cross-referencing  <audio>,  <image>, and  <video> objects)
        <hyperbaricfacility>
            <name>
            <aliasname>
            <address>
                <street>
                <city>
                <postcode>
                <country>
                <province>
            <contact>
                <language>
                <phone>
                <mobilephone>
                <fax>
                <email>
                <homepage>
            <notes>
                <para>
                <link/> (for cross-referencing  <audio>,  <image>, and  <video> objects)
        <indoor>
            <name>
            <aliasname>
            <address>
                <street>
                <city>
                <postcode>
                <country>
                <province>
            <contact>
                <language>
                <phone>
                <mobilephone>
                <fax>
                <email>
                <homepage>
            <notes>
                <para>
                <link/> (for cross-referencing  <audio>,  <image>, and  <video> objects)
        <lake>
            <name>
            <aliasname>
            <notes>
                <para>
                <link/> (for cross-referencing  <audio>,  <image>, and  <video> objects)
        <river>
            <name>
            <aliasname>
            <notes>
                <para>
                <link/> (for cross-referencing  <audio>,  <image>, and  <video> objects)
        <shore>
            <name>
            <aliasname>
            <notes>
                <para>
                <link/> (for cross-referencing  <audio>,  <image>, and  <video> objects)
    <rating>
        <datetime>
        <ratingvalue>
    <notes>
        <para>
        <link/> (for cross-referencing  <audio>,  <image>, and  <video> objects)