American aquanaut <a href="https://en.wikipedia.org/wiki/Berry_L._Cannon" id="mw-w" rel="mw:WikiLink" title="Berry L. Cannon">Berry L. Cannon</a> dies of carbon dioxide poisoning while attempting to repair a leak in the <a class="mw-redirect" href="https://en.wikipedia.org/wiki/SEALAB_III" id="mw_A" rel="mw:WikiLink" title="SEALAB III">SEALAB III</a> underwater habitat. The SEALAB project was subsequently abandoned.<sup about="#mwt90" class="mw-ref reference" data-mw='{"name":"ref","attrs":{"name":"San Diego"},"body":{"id":"mw-reference-text-cite_note-San_Diego-16"}}' id="cite_ref-San_Diego_16-0" rel="dc:references" typeof="mw:Extension/ref"><a href="./February_17#cite_note-San_Diego-16" id="mw_Q" style="counter-reset: mw-Ref 16;"><span class="mw-reflink-text" id="mw_g">[16]</span></a></sup>