Sǽ-wiht

According to the Old English Dictionary:

e;

sǽ-wiht

f. A sea-animal :-- Ðeós eorþe is Berende missenlícra fugela and sǽwihta this land is productive of divers fowls and sea-animals (the Latin has insula ... avium ferax terra marique diversi generis), Bd. 1, 1; S. 473, 15. sæ-wiht