The answer to your question would be that the words that make up the predicative adjective are <em>strange and exotic.</em>
Explanation:
A predicative adjective is a subject complement, a word or group of words that follows a linking verb or verb phrase such as <em>sound, smell, is, am, taste. </em>In this way, a predicative adjective describes the subject or subjects in a sentence by giving information as regards the subject's/ subjects' appearances or feelings. <em>Strange and exotic</em> describe the NP subject <em>marine life on the ocean floor.</em>