Sponges are a source of food for many species of fish.
Fish and other marine animals abound here.
Sponges are a source of food for many marine animals.
Marine animals find these to be a great source of food:

(1) grain
(2) nutrient
(3) sponges
(4) Energy.
(5) sea vents
(6) sodium
(7) Energy
(8) fungi