| Answer | Crossword Clue |
|---|---|
| pelagian | an oceanic animal |
| pelagians | PELAGIAN, an oceanic animal |
| ATOLL | Remnant of an oceanic volcano |
| ORCA | Top of an oceanic food chain |
| rhabdosphere | an aggregation of rhabdoliths in oceanic ooze |
| rhabdospheres | RHABDOSPHERE, an aggregation of rhabdoliths in oceanic ooze |
| ophiolite | An igneous rock consisting largely of serpentine, believed to have been formed from the submarine eruption of oceanic crustal and upper mantle material |
