How many letters does the top answer for “of or relating to or found in estuaries” have?

The most common answer is estuarial (9 letters).

Crossword clue: of or relating to or found in estuaries

2 answers found in Letterora's clue database (Wikidata facts, Open Trivia DB, WordNet and Webster definitions — all licensed sources).

estuarial 9 letters wn-def

of or relating to or found in estuaries

estuarine 9 letters wn-def

of or relating to or found in estuaries

relating to or found in australasia 50% similar → australasian