Frigatebirds dive for food accompanying the debris or sargasso.
From the en.wikipedia.org
Sargasso Trio scooped the Next Big Thing award and enjoyed national acclaim for their debut album.
From the edp24.co.uk
Sargasso is floating seaweed that sometimes holds a complete ecosystem from microscopic creatures to seahorses and baitfish.
From the en.wikipedia.org
More examples
Gulfweed: brown algae with rounded bladders forming dense floating masses in tropical Atlantic waters as in the Sargasso Sea
The Sargasso Sea is a region in the middle of the North Atlantic Ocean, surrounded by ocean currents. It is bounded on the west by the Gulf Stream; on the north, by the North Atlantic Current; on the east, by the Canary Current; and on the south, by the North Atlantic Equatorial Current. ...
Where the brain of the sufferer has deteriorated beyond repair - usually due to trying to combine roistering with Chartered Accountancy. The Sargasso victim is well-meaning, but ineffectual. Hence: "I thought of a term for the new Glossamery, but I can't remember what it was."