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The mimic octopus is an incredible animal that can impersonate the appearance and movement patterns of a lionfish, crab, jellyfish, and many other animals. However, scientists have recently found a small jawfish whose coloration copies the mimic octopus, mimicking one of the octopus’ arms!
Eutrophication is when a large amount of nutrients enters the water and causes a sharp increase in the algae population, which then rapidly die off once these nutrients are used up, creating low-oxygen conditions. Eutrophication often happens in areas where fertilizer run-off from agriculture gets into the water. In extreme cases, it can kill off a large area of marine life from lack of oxygen.
Scientists in Canada got a surprise while doing studies on human forensics. To look at how bodies decompose, they tossed pig carcasses into so called "dead zones", areas of low oxygen in the ocean. However, much to their surprise, sharks, lobsters, and other scavengers risked going into these suffocating conditions and ate their experiment!
New research shows that global climate change will affect the distribution of phytoplankton. Under warmer conditions, phytoplankton are expected to migrate away from the tropics and shift towards the cooler polar waters, which means we will have less diversity of phytoplankton around the tropics, which could also reduce fish diversity, impacting millions of people that rely on this food resource.
Scientists expect sea levels to rise approximately 3 feet (1 m) in the next 100 years due to global warming. This is not only due to the melting of polar land ice, but also “thermal expansion”, in which water increases in volume as it warms.
Photo: University of Kansas Evolution by natural selection is often described as “survival of the fittest”, but a new study suggests that some organisms may have a different evolutionary strategy for success: laziness. In the journal, Proceedings of the Royal Society B, researchers provide evidence that species with lower energy requirements may be less likely to go extinct. In the study, the researchers analyzed the metabolic rates of 299 species of bivalves and gastropods in the Western Atlantic, both extinct and extant. They found that during a 5-million-year period, high... (more)