Our blog series on the lesser known (but just as cool) species of the Arctic continues with Arctic copepods. Read our other blogs from the series: polar cod and brittle stars.
I’ve always loved ribbon seals, narwhals and ringed seals to name a few cute Arctic creatures. While these beautiful animals get all the glory, they wouldn’t be around for these important little guys at the base of the food chain: meet the copepod!
“Copepod” means oar-footed, and that is how these aquatic crustaceans, often called “insects of the sea” move around. They use their four to five pairs of legs as well as their mouth and tail to swim. In the Arctic, copepods live on the seafloor, in the water column and on the sea ice. In the water column, there are more copepods than any other multi-cellular organism.
Copepods come in many forms—some are filter feeders, some are predators. Copepods have two major life forms and grow by shedding their shell. They go through 12 stages after hatching—that’s a lot of wardrobe changes! By our standards, copepods are tiny, measuring in at 0.3 to 2cm long at full size.
November is the month for cozy sweaters and cold weather. Sadly, manatees don’t have the luxury of going out and buying warmer clothes to prepare for winter weather. Beginning in November, many manatees make their way from the cooling Mid-Atlantic coast to the warm waters around Florida. That is why November has the honor of being Manatee Awareness Month!
This month got off to a great start with Polar Bear Week, we just didn’t think November could get any better — but it did — with Manatee Awareness Month! To celebrate our favorite sea cow, here are a few reasons why we love these gentle, easy going marine mammals.
The ocean, in its vastness, is home to some amazing animals—and some amazing myths. The sailors and explorers we studied in history class are famous for more than their voyages and discoveries. Their travels often came with tales of fantastic creatures, too strange to be true. This Halloween, we thought we’d revisit some of the ocean’s most famous mythical creatures.
When I think of the great filter-feeding whales, I don’t tend to think of the Gulf of Mexico. However, I was recently reminded that the Gulf is home to some of these amazing whales. They are called Bryde’s (pronounced BROO-dus) whales, and they are found around the world, but only 33 of them live in the northern Gulf. A recent genetic study by NOAA biologists reveals that this small group of whales may be a completely unique subspecies!
Scarier than any movie shark that can smell a drop of blood miles away (they can’t, by the way) is this week’s news about sharks’ sense of smell. A team of Australian and American scientists has just shown that smooth dogfishes (also called dusky smooth-hound sharks) can’t smell food as well after living in ocean acidification conditions expected for the year 2100. These “future” sharks could correctly track food smells only 15% of the time, compared to a 60% accuracy rate for unexposed sharks. In fact, the acidification-exposed sharks even avoided food smells!
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