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One species of squid which lives in the depths of the Pacific Ocean does not bother to distinguish male from female when mating. At the dark depths where sight is limited, male and female squid look very similar, so males will mate with and attach sperm packets to any squid of the same species. Now that’s being opportunistic.
Despite their misleading name, sea cucumbers are not vegetables of any kind. These slow moving, soft bodied relatives of starfish and sea urchins live on the sea floor eating organic particles and microscopic marine animals. Sea cucumbers are important animals on coral reefs because they help remove dead material from ocean sediments.
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.
Did you know that some sharks can live in freshwater? The bull shark is able to withstand changes in salinity and swim from the ocean into freshwater rivers.
The Hawaiʻian Islands chain found in the Pacific Ocean is the most isolated Archipelago, located approximately 2,550 miles southwest of Los Angeles and about 3,900 miles southeast of Tokyo.
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)