ἁλιτενής
From LSJ
τὸ δ' ἐξαίφνης τὸ ἐν ἀναισθήτῳ χρόνῳ διὰ μικρότητα ἐκστάν → suddenly refers to what has departed from its former condition in a time imperceptible because of its smallness
English (LSJ)
ές,
A projecting into the sea, πέτρα D.S.3.44, Longus 2.12; ἄκρα, χερρόνησος, Str.8.2.3, 7.3.19, cf. Posidon. 66, Arr.Ind.21.9, Eun. Hist.p.241 D.; ambulatio ἁ. walk by the shore, Cic.Att.14.13.1. II of ships, of light draught, Callix. 1, Plu.Them.14. III of the sea, shallow, Plb.4.39.3, App.BC2.84.