海猫

 ウミネコ on Japanese Wikipedia

海(うみ) (umi, “sea”) + 猫(ねこ) (neko, “cat”), comparing its cry with that of a cat. Compare English seamew.

• (Tokyo) うみねこ [ùmínékó] (Heiban – [0])^[1]
• IPA^(key): [ɯ̟mʲine̞ko̞]

海(うみ)猫(ねこ) or 海猫(ウミネコ) • (umineko) 

1. black-tailed gull, Larus crassirostris

As with many terms that name organisms, this term is often spelled in katakana, especially in biological contexts (where katakana is customary).