For almost any object in the sea, there’s a creature who will feed on it – even if it’s a whale skeleton or a shipwreck. Though not related to one another, boneworms and shipworms share the remarkable ability to locate their meals in the vast ocean. Boneworms consume the bones of mammals, fish, reptiles and other animals, while shipworms – actually a type of mollusk – use their tiny shells to burrow into the wood of wrecked ships, trees adrift, or other wooden structures in the sea. Despite having neither stomachs nor mouths, both boneworms and shipworms have symbiotic bacteria in their gut that release nutrients from the bones or wood which these “worms” absorb as food.
The Marine Science Institute's monthly column, Science and the SeaTM, is an informative and entertaining article that explains many interesting features of the marine environment and the creatures that live there. Science and the SeaTM articles appear monthly in one of Texas' most widely read fishing magazines, Texas Saltwater Fishing, the Port Aransas South Jetty newspaper, the newsletter of the Texas Chapter of the American Shore & Beach Preservation Association , and the Heartland Of America online newspaper. Our article archive is available also on our website.
Perhaps you’ve heard of a full moon so bright you can read by its light. But what if you could also read by the light of ocean waves — at night, with no moonlight at all? If you’re in one of Puerto Rico’s famous “bioluminescent bays,” you might be able to. In these three bays, the water is full of tiny plankton called dinoflagellates which produce neon blue light called bioluminescence.
When we think of a pristine shoreline, we don’t usually picture man-made structures in the scene, but jetties and retaining walls are common sights along many waterways. Waves that continually crash against the shore release energy that can erode waterfront property. Bulkheads, retaining walls, and revetments are designed to protect shorelines by minimizing erosion. Over time, however, these structures may actually increase erosion by altering nature’s ability to replenish sensitive coastal areas.
Sometimes scientists searching for one thing stumble unexpectedly onto another. A few years ago, a research team did just that, they drilled into an Antarctic ice sheet and opened up a can of anemones — almost literally. When the Antarctic Geological Drilling (ANDRILL) Program lowered a 4.5- foot cylindrical robot through the ice off the coast of west Antarctica, they were hoping to use the robot’s two cameras to learn about ocean currents while gathering data for modeling the drill’s use. In the process, their cameras captured an icy garden of sea anemones that no one knew existed.
Most people know that electricity and water don’t mix, but it’s not a problem for fish that produce their own electricity. The best-known electric fish is probably the electric eel, but it is far from the only “shocking” creature underwater. In fact, the electric eel, a single species that dwells only in the rivers of South America, is outnumbered by more than 60 species of electric rays that live in the oceans.
Seahorses and pipefish may be beautiful and graceful creatures, but they’re not the speediest of fish. In fact, they swim more slowly than most marine animals, yet they manage to catch some of the fastest prey in the sea nearly every time. Their secret weapon? Seahorses use their unusually shaped heads.
The thought of “synchronized swimming” may call to mind the Olympic event or perhaps white-capped women in old Hollywood musicals. But there’s another mammal that uses synchronized swimming — and it’s not just to show off.
Long-finned pilot whales synchronize their swimming when they sense danger. Researchers made this discovery when comparing two populations of pilot whales, one in the Strait of Gibraltar off the Spanish coast and one near Cape Breton on Canada’s east coast.