How many letters does the top answer for “small arctic whale the male having a long spiral ivory tusk” have?

The most common answer is narwal (6 letters).

Crossword clue: small arctic whale the male having a long spiral ivory tusk

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

narwal 6 letters wn-def

small Arctic whale the male having a long spiral ivory tusk

narwhal 7 letters wn-def

small Arctic whale the male having a long spiral ivory tusk

narwhale 8 letters wn-def

small Arctic whale the male having a long spiral ivory tusk