Our regular Science and the SeaTM radio program presents marine science topics in an engaging two-minute story format. Our script writers gather ideas for the radio program from the University of Texas Marine Science Institute's researchers and from our very popular college class, Introduction to Oceanography, which we teach to hundreds of non-science majors at The University of Texas at Austin every year. Our radio programs are distributed at to commercial and public radio stations across the country.
A few strands of kelp washing up on a beach usually isn’t much cause for alarm. But when two clumps of southern bull kelp were found in Antarctica in early 2017, scientists were concerned. While the kelp didn’t constitute a full-scale invasion, it did suggest that invaders might be a bigger threat in the years ahead.
Antarctica is well isolated from the rest of the world. Strong winds and currents in the surrounding ocean tend to keep creatures from other lands away. In fact, scientists had thought the Southern Ocean was like a steel curtain, keeping Antarctic shores untouched.
What do you get if you give a young rainbow trout a good travel agent? A steelhead trout. While most rainbow trout spend their entire lives in rivers and streams, some head out to sea. Such travelers are known as steelheads. It’s unclear, though, exactly what causes one trout to stay at home and another to seek the open ocean.
Both forms are types of salmon. They’re found from the northwestern United States across to northeastern Asia. They hatch in fast-flowing waterways with gravel bottoms, where the eggs can be covered up to protect them from predators.
If you like the deep blues and rich blue-greens of the oceans, then you might really enjoy the view at the end of the century. A recent study says the blues could be bluer and the greens greener. While that might be aesthetically pleasing, it's not a good thing for life.
A couple of factors determine ocean color: the water itself, and the stuff it contains. Water molecules absorb redder wavelengths of light and reflect bluer wavelengths, making water look blue.
The grunt sculpin doesn’t do much of anything the conventional way. The little fish usually walks instead of swims. It frequently lives in “homes” that were abandoned by other creatures. And when it comes to courting and raising a family, the female pursues the male, who does most of the egg-sitting.
Grunt sculpin get their name from a “grunt” they make when they’re pulled out of the water. They live along the Pacific coasts of Japan and the United States. They’re found in tidepools and just offshore, usually in shallow waters. They top out at about three inches long.
In the history of the United States, Dwight Sigsbee is recorded as the captain of the U.S.S. Maine when the ship was sunk in Havana Harbor in 1898. The sinking triggered the Spanish-American War.
In the history of oceanography, though, Sigsbee is recorded across the bottom of the Gulf of Mexico. Because he led the first expedition to chart the Gulf floor, in the 1870s, he’s the namesake of several features. They’re all part of the deepest part of the Gulf -- a 300-mile-wide patch known as the Sigsbee Basin or Sigsbee Deep.
The rhinoceros auklet has a strong work ethic. The bird heads out to sea before dawn, spends the day hunting, and returns to its nest well after dark. Since predators can’t see the birds coming and going as well when it’s dark, that behavior may help the auklet protect its nest.
The rhinoceros auklet is found along the Pacific coasts of North America and northern Asia. In North America, most of them breed in cooler northern climates, then winter over in California.
Climate scientists in Asia noticed something odd about the summer of 2004. Droughts and heat waves overwhelmed a good bit of southeast Asia, most of Australia, and parts of the Americas. But it was especially wet in the Philippines, New Zealand, and Brazil. At the same time, scientists recorded unusual water temperatures in the Pacific Ocean.
Jellyfish are among the least-appetizing creatures in the oceans. And biologists have long assumed that even other sea creatures didn’t eat them. After all, 95 percent of the average jellyfish is nothing but water, so it doesn’t offer much actual food. And the “stingers” on many jellies can turn them from prey to predators.
A research vessel will be making some nice stops this year -- from South Carolina to Bermuda to the Azores. Between those ports of call, it’ll explore regions of the Atlantic Ocean that are largely uncharted. It’ll map the ocean floor, take a look at coral reefs, and study the water. And it’ll broadcast all of its work in real-time, allowing scientists around the world -- and all the rest of us, too -- to watch over its shoulder.
Marine biologists said “hello” to a new species of a tiny fish that lives on the California coast just a few years ago. Now, they’re trying not to say, “good bye.”
The tidewater goby is only a couple of inches long. And its mating rituals are the opposite of most fish. The male digs a burrow to house the eggs, then is “courted” by females, who exhibit colorful displays to attract potential mates.