Imagine slipping into the cool, late summer waters of Monterey Bay in central California, expecting to settle to the bottom and film kelp beds and the sealife associated with this unique marine ecosystem. As you descend into the Bay's emerald green water laden with nutrients, you find yourself surrounded, engulfed by sea jellies reaching two feet in length. An invasion of sea jellies is in full assault in Monterey Bay.
But it's not as hostile as it seems. Aggregations of sea jellies have occurred around the world, to the extant that scientists were able to see cyclical patterns. But now they are beginning to scratch their heads as more and more population outbreaks of various species are happening worldwide. The potential for a sea jelly to become an invasive species is always there, possibly transported in the bilges of international freighters as has been the case for some species of algae and seaweed. And their increased presence can destabilize local fish populations as fish seek locations free of the sea jellies' stinging tentacles.
But marine biologists are also considering man-made factors like climate change and ocean pollution. Increasing water temperatures due to climate change can stimulate sea jelly growth. And sea jellies also thrive in areas of low oxygen as a result of pollutants.
Additionally, you have the impact of overfishing on some of the sea jellies' natural predators, whether they are a commercially sought species or not. The loss of tuna and sea turtles, among others, removes an important control mechanism to sea jelly populations. And in turn, swarms of sea jellies can envenom and spoil entire commercial catches.
Sea jelly invasions. It's a topic that raises more questions than there are definitive answers at this time. Some scientists are hesitant to correlate human actions with sea jelly populations, while others pose the possibility that sea jellies could become the dominant species in the ocean. And in several Asian countries, sea jellies are already on the menu; an indication that their increasing numbers could prove a viable food source (I'll pass, if you don't mind.)
One thing is for sure; to be in the midst of thousands of these fascinating invertebrates, slowly weaving along with the currents, is an awesome sight. That is until you feel the burning, itching sensation around your unprotected face and you give leeway to these gelatinous invaders.
In case you just happen to be in the area, would you like to cruise through the towering kelp beds of California's Monterey Bay? Perhaps you'll come across a darting sea otter or a school of calico bass seeking shelter, partly camouflaged by the waving fronds of giant kelp. And maybe along the way, you'd like to pick up a few ideas and tips on composing an underwater video that packs a message and a punch, better than last year's family vacation video to Wally World?
If so, then check out the Underwater Video Boot Camp workshop and 2 dives that I will be conducting next week as part of the festivities at the BLUE Ocean Film Festival & Conservation Summit. Not only will I be covering what many of those buttons and switches do, but we'll also look at preparing a meaningful storyline, what style of editing might be best for your video, and what types of distribution formats you might consider.
Two dives in some of the most acclaimed kelp forests in the world plus a full introduction to underwater video - a full day and a great start to a fabulous week at the BLUE Ocean Film Festival. Only $125 to registered festival attendees - that's a deal! And arrangements can be made for rental dive gear and even a basic video camera, if you're traveling.
Davidson Seamount, 70 miles off the California coast, is 4,120 feet below the surface but extends another 7,784 feet to the ocean floor. It is home to a variety of deep, cold water animals and its location attracts a variety of sealife in the waters above the peak, providing nourishment for other fish, sea birds, and whales. The seamount and its slow growing/slow reproducing inhabitants are susceptible to the ravaging effects of commercial bottom-trawling, where weighted nets are dragged across the seafloor.
There are several state and federal marine sanctuaries or protected areas along the California coast and, through effective government agency enforcement and overall public and commercial cooperation, they have proven to be successful in not only just providing protection but in improving the health of the marine ecosystems that have in the past been threatened or damaged by commercial fishing, oil exploration, and pollution.
The RTSea Blog was started in 2008 and now includes over 950 entries available for media or academic background research use, including observations on a wide range of topical issues and events involving the oceans, sharks, and nature in general. After a brief break in 2012-13, there will now be more posts forthcoming.
Use keywords in the Search tool below or at the bottom of this web page to locate articles of interest.
Cinematographer/media consultant & producerRichard TheissandRTSea Mediaadministers this blog with the intent that information will be disseminated across the Internet and, in so doing, will illuminate others as to the serious challenges that lay before us in preserving and protecting our natural resources.
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Richard Theiss - DP/Media Consultant & Producer
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Imagine slipping into the cool, late summer waters of Monterey Bay in central California, expecting to settle to the bottom and film kelp beds and the sealife associated with this unique marine ecosystem. As you descend into the Bay's emerald green water laden with nutrients, you find yourself surrounded, engulfed by sea jellies reaching two feet in length. An invasion of sea jellies is in full assault in Monterey Bay.
