It depends on the animal. Most eat other marine life, or, in the case of plants and some bacteria, they photosynthesize.
Marine animals have different ways of maintaining their water balance. Some marine animals, like fish, have specialized organs that help them excrete excess salt, while actively seeking out sources of fresher water. Others, like marine mammals, obtain water from their food and have efficient kidney functions to conserve water. Some marine invertebrates, like sponges, can filter and pump water to extract nutrients and maintain their water balance.
Rookeries, which are breeding grounds for seabirds and marine animals, typically eat a diet of fish, krill, and other small marine organisms. The specific diet of a rookery can vary depending on the species of animals residing there and the availability of food in their environment. These animals rely on the resources found around the rookery to feed themselves and their offspring.
Marine animals such as manatees, sea turtles, and various fish species feed on marine plant life like sea grasses, seaweeds, and algae. These plants provide important nutrients and energy to support the diverse marine food web.
A copepod is a small crustacean that belongs to the group of zooplankton. They are an important component of the marine food web, serving as food for many fish and other marine animals. Copepods play a key role in marine ecosystems by cycling nutrients and energy.
Phytoplankton, which are microscopic floating plants, form the base of the ocean food chain. They convert sunlight into energy through photosynthesis, providing food for many marine organisms including zooplankton, small fish, and other marine animals.
Plant obtain their food from the sun. The process is called photosynthesis. Animals obtain their food from animals or plants.
Most marine animals swallow their food whole. This is because they do not have teeth. But not all marine animals swallow their food whole. Some have small teeth.
Marine organisms obtain phosphorus primarily from dissolved inorganic phosphate in the water column or from consuming other organisms that contain phosphorus in their tissues. Phosphorus is an essential nutrient for growth, energy transfer, and cellular processes in marine organisms.
people make food from farming and obtain food from animals
Personally i wouldn't kill marine animals, but some people will to get food or to have fun
from the food they eat.
mostly from food.
They hunt for small animals.
They obtain there food by killing animals and gathering fruit and plants
From the plants or animals they eat.
The waste from marine animals is returned to the water in which they live. It forms part of the food chain as it is ingested by the micro-organisms that in turn become food for larger marine life.
Animals obtain their energy and carbon from the food they ingest. Carbohydrates and protein are a good source of carbon and energy.