What does the cryptic crossword clue "Sculpture of sea god in US city (3,5)" mean?

The definition is "city". The wordplay uses an anagram. anagram of SEA + GOD + IN = SAN DIEGO; definition: "US city" The answer is San Diego.

Sculpture of sea god in US city (3,5)

Telegraph Prize Cryptic #3010 | 28 Across | 2019-06-30 flower