No. They eat zooplankton (krill, copepods, mysids, etc.).
copepods, mysids and benthic crustaceans
Clown Fish eat mysids, isopods, zooplankton small invertebrates which otherwise potentially could harm the sea anemone.
Mysids are small shrimp,common in all marine habitats. Most are very small, especially in shallow water both fresh and saltwater. Deep sea Mysids can reach sizes toward 1 foot long (30 cm). Phylum : Arthrpoda Sub-phylum: Crustacea
Pipefish are predators. They eat crustaceans, small fish, aquatic insects and insect larvae. Exactly what they eat depends on the species. Smaller ones eat copepods, amphipod larvae, small mysids. Larger ones might eat grass shrimp and fish.
up to 25 years
Seahorses feed on small living animals such as, dephnia, cyclops, larvae of water insects, or mysids. Voratious eaters, they graze continually and can consume 3,000 or more brine shrimp.
They "suck" the mysids or amphimipods up their long, tubular snout.
Gray whales eat prey from the seafloor. They commonly eat shrimp-like creatures called Amphipods. They do not eat Coho salmon.
If you mean an omnivore, (a meat and plant eating creature), not they are not. They eat tiny crustaceans such as mysids and amphimipods, so you would class them as carnivores. Imagine a dangerous group of hungry seahorses causing devastation to humanity as we know it!
Manta rays are filter feeders that prey on microscopic organisms such as copepods, mysids (small shrimp-like creatures), and the larvae of fish, lobster, and octopus. An adult manta ray may feed on 60 pounds of microscopic plankton, fish larvae, copepods, and zooplankton in a single day.
I am pretty sure they eat fish, or berries, but not squid.