1. Introduction: This report will mainly focus on some adaptation features creatures which live in the lake and wetland freshwater habitat have. 2. The adaptive features of animals: i. Adaptation to live in the habitat lack of oxygen A. Crayfish: Crayfish lives in fresh water stream, which is an aquatic environment.
These sea anemones often adorn the shells of the hermit crabs, and fends off small predators with its stinging cells. In return, the sea anemones obtain food scraps from the crab. The relationship between these two species are so important, that when hermit crabs switch shells, they will coax and remove the anemone from the old shell to their new one (“Crabs” 1093). In addition to sea anemone, many other types of epifauna also adorn the shells of hermit crabs, and it was hypothesized that the type of shell affects the biodiversity of the fauna. Two species of the hermit crab, the Pagurus bernhardus and the Pagurus pubescens in Arctic waters, were studied and the biodiversity of the epifauna on the shells of these hermit crabs were explored.
Marine organisms are animals, plants, and other living things that live in the ocean. A Marine biologist is a scientist who studies marine organisms and studies the bodies, behavior, and the history of marine organisms. They also study how marine organisms interact with each other and their environment. I have chosen to research about Marine biology because I would like to learn about sea life, the ocean, and its surrounding environment. To start off, a Marine biologist might study coral, crabs, fish, microscopic marine organisms, sea stars, seaweed, squid, or whales.
They break down dead biological matter and waste products and convert them into useable energy; returning important materials to the environment. Decomposers are a particular important feature in the Great Barrier Reef considering the heavy bio-load. Main decomposers inside the reef include bacteria, sea cucumbers, some species of snails, crabs and bristle worms. Bacteria sis not only vital for the Great Barrier Reef’s food web, but is also said by scientists that it could be the key to keeping the coral healthy and able to withstand the impacts of global warming. Dr Tracy Ainsworth stated “it is very likely that these microorganisms play a vital role in the capacity of coral to recovering from bouts of bleaching caused by rising temperatures.” Corals rely on these good bacteria’s crucially although we don’t yet understand these microbe’s ell enough to know how they influence coral survival, which is vital in maintaining the food web of the Great Barrier Reef.
AP Environmental Science: Chapter 5 1. Explain how southern sea otters act as a keystone species in kelp beds. The otters help to keep sea urchins and other kelp-eating species from depleting highly productive and rapidly growing kelp forests, which provide habitats for a number of species in offshore coastal waters. Without southern sea otters, sea urchins would probably destroy the kelp forests and much of the rich biodiversity associated with them. Explain why we should care about protecting this species from extinction.
Jellyfish have external reproduction, where they release the egg and the sperm into the water to meet each other. As they mature the fertilized eggs reproduce asexually by cloning themselves. The methods used by the earthworms and jellyfish both offer an opportunity for predators to eat the offspring before they can
⦁ Squid: It depends on the species you are talking about, you can find squid in all major bodeis of water. Some will live in warm tropical waters and other will live in a cooler climate water. Most squid live in salt water but there are some that live in freshwater as well. ⦁ Oysters: They can live in a wide range of areas due to there strenght towards temperature, salinity, and concentrations of suspended sediments and dissolved oxygen. What problems will these animals have?
Adaptation is the key to an organism’s survival. It is the only way that organisms can advance with the ever changing environment. According to Charles Darwin’s theory of evolution by natural selection, the organisms that obtain inheritable traits which permit them to adapt better to their habitat are more likely to survive, reproduction and pass these traits to their offsprings. Thanks to dedicated biological researchers, veterinarians and well-advanced technology, we now have incredible new insights into the life of the polar bears. Through remarkable structural and physiological adaptations, polar bears are the most successful organisms living under the extreme conditions of the Arctic Circle.
Sea otters have couple of normal predators in the ocean because of their vast size. Those sea otters that live further south are essentially gone after by the considerable white shark and those sea otters that occupy more northern areas of the Pacific, are gone after by executioner whales. People are one of the sea
Horseshoe crabs are marine living fossils, probably traced back to 485 million years ago. There are two horseshoe crab species found in Hong Kong. Horseshoe crabs are an ancient marine chelicerates, identified as the Class Merostomata and Order Xiphosura. The animals are identified by the having appendages around their middle of the mouth and their swimming legs at their end of their body. They are in close linkage with trilobites and arachnids which are spiders and scorpions.