Dolphin sightings in the Chesapeake Bay have been on the rise in the past few years, increasing from a sighting here and there to sightings of large pods daily. Dolphins were once regular inhabitants of the bay, but steadily decreased as pollution increased in the 20th century. Now that the water is cleaner than years past, submerged aquatic vegetation has rebounded, and fisheries are recovering, it has become the inviting space it once was for dolphin. Researchers have set up a website to track dolphin sightings. Through the website data they receive, it is estimated that there are thousands of dolphins residing in the bay during the warmer months.

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During the recent NOAA expedition aboard the Okeanos, the scientific team discovered a hidden coral bed of bamboo coral 7,500 feet beneath the surface. The 23-day expedition was aboard the only federally funded vessel devoted entirely to oceanic research. NOAA estimates that the coral structures are up to 1,000 years old.

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In a newly published study, scientists have shown that shark may prefer the regular beat of jazz music over classical music. Experts have long hypothesized that sharks associated the noise of a boat’s engine with food after many years of being fed. In this study, scientists trained port jackson sharks to follow music played at one end of a fish tank for a food reward. The results of the study illustrate a lot about what sharks are capable of.

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Scientists have seen a significant upswing in the number of pregnant female humpback whales in the Antarctic recently. Blubber samples over a six year period showed approximately 60 percent of females had high progesterone levels, an indication that they were pregnant. The scientists also have seen an increase in the number of calves born in recent years. Both signs are encouraging as humpback whales are at ten percent of their population from pre-whaling years.

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