Krill eat phytoplankton and tiny single-celled plants and algae. Most species of krill are omnivorous filter feeders, although there are some carnivorous species that eat the larvae of fish and zooplankton. Most krill use their frontal appendages to form fine combs, which allow them to filter food from the water.Know More
Krill are crustaceans similar to shrimp, and they are an essential link in the global food chain. Without krill, countless aquatic creatures all over the world would become extinct. Hundreds of species of fish, penguins, seals, birds and whales depend on krill as their primary food source. For example, in 1998, declining krill populations are believed to have caused salmon not to breed for a season in the Bering Sea. Often ecosystem disturbances can have far-reaching consequences as the food chain is broken.
As of 2014, it's believed that global warming is causing a decline in Antarctic krill populations. As temperatures rise and the ice melts, ice-algae becomes more scarce, which is an important food source for krill. Studies have shown that the amount of krill in the Antarctic has decreased by as much as 80 percent since the 1970s. Continued declination of krill could cause a severe loss of animal life in the Antarctic. Although krill use sunlight and carbon dioxide for energy, additional sustenance is required.Learn more about Marine Life
An aquatic ecosystem is a community of organisms and their interactions in a water environment. This type of ecosystem doesn't have to be large. A drop of water contains an entire aquatic ecosystem because the microorganisms in that drop of water are independent of outside organisms and completely supported by that small amount of water.Full Answer >
There are many different animals that live in saltwater including crocodiles, turtles, manatees, fish and sharks. Some of the fish species that live in a saltwater environment include the Achilles Tang, the Angelfish, the Blue Devil, Boxfish, Clownfish, Moray Eels, the Grouper, the Jawfish and the Pufferfish.Full Answer >
Like adult seahorses, seahorse babies, which are also known as fry, eat a lot of food in a single day; these tiny creatures can eat as much as 3,000 pieces of food a day. As adults, seahorses will typically eat on no fewer than 30 occasions per day, with as many as 50 eating episodes taking place in a 24-hour period. This voracious appetite is related to the fact that the seahorse has no stomach and has a digestive system that has been described as inefficient, meaning this sea creature must eat a lot in order to stay properly nourished.Full Answer >
Numerous organisms in the sea consume plankton, including all baleen whales like blue whales and bowhead whales, fish like whale sharks and other filter-feeders. Plankton have long been attributed as the foundation of the ocean food web, and can be separated into two distinct and different groups: phytoplankton and zooplankton. Both have contributed immensely to the ecosystem by harvesting energy through photosynthesis and converting it into essential nutrients.Full Answer >