In the deep sea, organisms must be adapted to survive stresses absent in surface waters such as extreme pressure, lack of light, food scarceness, toxic chemical flows and other factors that make it difficult for life to thrive. Symbiotic relationships — the interaction between two different organisms that share a close association with one another — allow for organisms to better survive predation, starvation and habitat variability. In well-established mutualistic relationships, species can shape their morphology to support their interactions. Such can be seen in the case of the hydrothermal vent shrimp Rimicaris exoculata. The crustacean has a dense setae coverage in its mouthparts which houses the bacterial epibionts — Epsilonproteobacteria and Gammaproterobacteria — it needs to oxidise sulphur and iron compounds expelled from vent fluids. To support even more of the ectosymbionts possible, the species has developed a large cephalothorax, the inner side of which supports the setae.
Symbiotic Relationships as a Valuable Adaptation to Survive in Extreme Environments
Adaptation | National Geographic Society
In the 5 million years since early hominids first emerged from east Africa's Rift Valley, the Earth's climate has grown increasingly erratic. Over cycles lasting hundreds of thousands of years, arid regions of central Africa were overrun by forests, forests gave way to grasslands and contiguous landscapes were fractured by deep lakes. It was within the context of this swiftly changing landscape that humans evolved their sizable brains and capacity for adaptive behavior, said Rick Potts, director of the Human Origins Program at the Smithsonian Institution National Museum of Natural History. In such a world, the ability to think creatively, to imagine novel solutions to survival threats, proved to be a major asset, he said.
Survival And Adaptation
Please join StudyMode to read the full document. Animal Adaptations -- Vocabulary Adaptation A body part, body covering, or behavior that helps an animal survive in its environment. Behavior The actions of an animal.
In: Science. Apparently, this teamwork with the dolphins had become the tradition for these Brazilian fishermen as they worked together for more than 15 years Welsh, This cooperative behavior of both has created a unique culture that both fishermen and dolphins pass on their tradition by teaching.