Echinoderms, they are among the most common invertebrate animals in the marine environment of virtually any part of the world, among them we can find species such as sea cucumber , salmon and cod fish, they have chamois cloth like outer layer, then we have the Crinoids, another example of marine species with feather, popularly they are called sea lilies and feathery stars, they have a solid calcite skeleton; they were so abundant in the paleozoic seas that their remains formed large limestone thicknesses.
The Normal Graph has higher increments of increasing and decreasing; the Cold Spring howeverhas increases and decreases at small amounts, but an overall increase.
Answer: swordfish, dolphins, and sharks
Explanation: Consumers must eat other consumers or producers to survive in the open ocean. Out of the provided answer choices, swordfish, dolphins, and sharks all prey on producers or other consumers to eat.