they eat random sh** floating in the water such as microcopic organisms. they are filter feeders.
all sponges dont have teeth, so they eat small plankton.
yes they do
plankton
They eat bacteria, plankton and detritus.
The reasons why any animal eats a particular organism is never clear. A top reason why Nudibranchs might eat 'toxic sponges' is that there was not much else available to eat and it was easy to eat the sponges. These sponges were a niche that was unfilled and the Nudibranches adapted to take it. The sponges are still partially toxic to Nudibranchs! They often have specially lined stomachs to protect them from the sponges sharp spicules and the toxins from the sponge accumulate in them. When a predator tries to eat a nudibranch it gets a nasty mouthful of these toxins.
nutrients from the water
zooplankton
They are filter feeders, but they mostly eat plankton.
They eat sea sponges and are carnivorous.
no sponges do not eat small fish they move slowly across the ground like starfish and eat bacteria of rocks and coral.
algae and bacteria
sponges capture bacteria, plankton,and other tiny organic particles.