<?xml version="1.0" encoding="utf-8"?><!DOCTYPE Zthes SYSTEM "http://zthes.z3950.org/xml/zthes-05.dtd">  <Zthes><term><termId>31361700</termId><termName>undersea features</termName><termType>PT</termType><termNote><![CDATA[ Physical features located in the oceans below sea level, whether natural or man-made. ]]></termNote><termCreatedDate>2026-03-30 20:37:35</termCreatedDate><relation><relationType>UF</relationType><termId>31361701</termId><termName>features, undersea</termName><termType>ND</termType></relation><relation><relationType>UF</relationType><termId>31361702</termId><termName>undersea feature</termName><termType>ND</termType></relation><relation><relationType>BT</relationType><termId>31327383</termId><termName>physical features</termName><termType>PT</termType></relation><relation><relationType>NT</relationType><termId>31324173</termId><termName>undersea landforms</termName><termType>PT</termType></relation><relation><relationType>NT</relationType><termId>31402778</termId><termName>man-made undersea features</termName><termType>PT</termType></relation><relation><relationType>RT</relationType><termId>31324362</termId><termName>water features</termName><termType>PT</termType></relation></term>  </Zthes>