Related Clues:

• Complex in the middle of pre-season attracts those likely to be just fishing
• Ted's abandoned firmly established type of fishing
• Found in much water, a couple of drugs knocked back
• Like some divers in river — note each going under
• Relating to such places as the Mariana Trench
• In the far ocean
• River, I forgot to say, starts to ebb away from the ocean
• Relating to most profound parts of the ocean
• Taking place in lowest parts of the ocean
• They become high when there's more than one
• Complex in the middle of pre-season attracts those hiding from other swimmers perhaps
• Like some divers stuck initially in river plant
• Submarine's realm
• Type of diving
• Kind of fishing or diving