How do I solve 18 down in Express Cryptic 20260522?

Question

Accepted Answer

18 down reads "Turning sea into land" (7 letters); the answer is ESTONIA. It's an anagram clue: the answer is a rearrangement of letters supplied by the clue itself. Look for an indicator like 'mixed', 'broken', 'cooked', or 'wild', and find a phrase whose letters add up to the answer's length. The full step-by-step breakdown is on this page.

Turning sea into land (7)

18D — Turning sea into land (7) — ESTONIA