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Jyutping seoi2 gaak6 gaat6
Pinyin shuǐ yuē zhá

Definitions (Wiktionary)
  1. noun, Cantonese
    predaceous diving beetle (Dytiscidae)

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Jyutping seoi2 gaat6 zaat2
Pinyin shuǐ yuē zhá

Definitions (粵典–words.hk)
  1. 名詞
    一​種​喺​水​入​面​生活​、​外表​好似​曱甴​嘅​昆​蟲​,​學名​龍蝨​(​量​詞​:​隻​)
    predaceous diving beetles