Friday, July 30, 2010
Posted by Collier County Sea Grant Agent at 5:06 PM
|mangrove snapper swimmingover the|
Doctors Pass 4.5 Mile Reef
Next we explored the Powerhitter wreck, which is an old shrimp trawler. This was my first time diving the wreck. I was shocked I didn't see one goliath grouper, but there were plenty of other fish present. As you will see in the attached video, visibility was not great, but I'm use to that (pardon the quality of the video- I guess I don't have to worry about National Geographic recruiting me anytime soon!).
|juvenile cocoa damselfish|
Posted by Collier County Sea Grant Agent at 8:26 AM
Wednesday, July 28, 2010
Sea squirts (left) and skate egg cases (center) can often be mistaken for tar balls (right) on Florida shores. Source: Bryan Fluech (Florida Sea Grant), Andrew Diller (Florida Sea Grant), NOAA
Although NO oil has made its way onto Southwest Florida beaches, there have been several false reports of "tarballs" and other "oil-like" substances along our shore. It is important to remember that there are several natural items found along our coast that can easily be mistaken for oil. This useful article was published by Bill Mahan, the Florida Sea Grant Extension Agent for Franklin County.
As a result of the BP Deepwater Horizon oil spill, anyone out boating in the Gulf of Mexico region or walking the beach is keeping an eye out for oil. In most cases the person reports their “oil” sighting to the county's Emergency Operations Center (EOC) with information on the date, time, place and what they saw. This is exactly what you should do if you see something you believe is related to the oil spill. Once the EOC receives a report of oil sheen, tar balls, or chocolate mousse, the EOC will notify the State EOC. Depending on the location of the report, a boat, plane or Shoreline Cleanup Assessment Technique (SCAT) team will be sent to the site to investigate, and to confirm or deny the presence of any oil product.
This reporting and verification system is in place to help reduce the number of rumors floating around about the oil sightings. Where the system seems to be leaking, however, is that individuals and the local media reporting a possible oil sighting aren’t waiting for verification. Instead, they react to hearing the original sighting report, or that a boat, plane, or SCAT Team has been sent to investigate the report. The result has been a lot of unnecessary panic and rumors.
Here's one example. As of July 1, there have been 19 State Watch and 81 Recon Reports of “BP oil spill product” called-in to Franklin County's EOC . Each report has been investigated and none has been confirmed to be related to the BP oil spill. In fact, the cause of many of the sightings has turned out to be natural biological activities caused by Mother Nature herself.
People need to realize that not all sheen on the water, dark spots or blobs on the beach, and foamy or frothy material floating around in the water are caused by oil. In fact, Mother Nature produces these oil look-a-likes all the time. This is especially true this time of the year, when our warm Gulf water is biologically active and productive.
Let's take a look at some of Mother Nature’s look-a-like oil spill creations:
Oily Sheen on the Water’s Surface
A naturally occurring biological sheen (left) tends to lack the rainbow hue of an oil spill sheen. Source: Seth Blitch (Florida DEP), NOAA
Oil, or sheen oriented in lines, or streaks floating on the water surface can easily be confused with the vegetative scum that can collect in tidal convergence lines or "tidelines." Sometimes called streaks, stringers, or fingers, they are commonly found floating in near and offshore Gulf waters. They are usually just a collection of seagrasses, seaweeds and protein scum or foam that is being moved around by the tides and wind. Lines of vegetative foam that collect in tidelines (right) can easily be confused with the mousse mixture that forms when dispersants mix with oil. Source: Seth Blitch (Florida DEP), U.S. Coast Guard.
Dark, Oil-like Patches of Sand on the Beach
Several reports of black oil-like patches on the beach have been reported in Franklin County. When investigated, the dark patches of sand were found to be caused by ‘June Grass;’ clumps of sargassum and seagrass, or several different types of seaweed, that wash up on our local beaches. Although ‘June Grass’ can wash up on our beaches any time of the year, it typically begins washing ashore in large clumps in June, thus its name. In addition, these seaweeds and seagrass can break up into small dark particles as they are swept back and forth by wave action in the intertidal zone, leaving behind an area of dark-colored, stained sand. Naturally occurring sargassum seaweed (left) washed up on the beach can easily be confused with dark patches of oil on the beach (right). Source: Andrew Diller (Florida Sea Grant), BP.
A general description of a tar ball is weathered oil that has formed a pliable ball. They vary in size from a pinhead to about a foot across. Sheen may or may not be present around them. At this time, we have had a number of confirmed tar ball reports in the Florida Panhandle Region from Bay to Escambia County. However, before real tar balls were washing ashore, initial tar ball reports from Destin, upon examination, were identified as skate egg cases. Also, sea pork, a colonial type of sea squirt, pieces of peat and small sea cucumbers have been reported as possible tar balls in Panhandle counties.
So what should you do if you see something that might be related to the oil spill?
By all means, please report it to your local EOC. Provide them with as much information as possible about when, where and what you saw. Then sit back and wait to hear if your sighting is confirmed as oil from the Deepwater Horizon spill, or it is something else. Until you receive confirmation, the last thing you should do is spread a rumor around either verbally, or via a social network, like Facebook, or Twitter. It makes absolutely no sense to spread a rumor around that can get people upset or worried. Be patient and wait to hear the investigation result of the sighting you reported.
Florida Oil Spill Reporting Hotline: 1-877-2-SAVE FL (1-877-272-8335) or #DEP on most cell phones.
Distinguishing Oil from Algal Blooms (NOAA Fact Sheet, pdf)
Posted by Collier County Sea Grant Agent at 8:34 AM
Sunday, July 25, 2010
Researchers with the Florida Fish and Wildlife Conservation Commission’s (FWC) Fish and Wildlife Research Institute collected two juvenile red lionfish (Pterois volitans) last week from the Gulf of Mexico. With the exception of a probable aquarium release from the Tampa Bay area, the discovery of these lionfish marks the first time this nonnative species has been documented in Gulf waters north of the Tortugas and the Yucatan Peninsula.
FWC researchers found the lionfish in the catch from two separate net tows taken at distances of 99 and 160 miles off the southwest coast of Florida, north of the Dry Tortugas and west of Cape Romano. The specimens were taken from depths of 183 and 240 feet as part of a trawl survey funded by the Southeast Area Monitoring and Assessment Program, a cooperative state and federal program.
FWC scientists believe the two juvenile lionfish, measuring approximately 2.5 inches in length, are either evidence of a spawning population on the Gulf of Mexico’s West Florida Shelf or they were transported to the area by ocean currents from other potential spawning areas, such as the waters off the Yucatan Peninsula. Either of these scenarios could indicate an expansion of the range of this species in the eastern Gulf of Mexico.
Lionfish are nonnative, venomous fish that have been sighted in Atlantic coastal waters of the United States since the mid-1990s and have been reported more recently in the waters of the Florida Keys and Dry Tortugas. Lionfish, specifically the red lionfish and the devil firefish, appear to have established populations in the western North Atlantic Ocean. These species are native to the reefs and rocky crevices of the Indo-Pacific, but were likely introduced into South Florida waters in 1992.
To report sightings of lionfish, call the nationwide reporting number (877-STOPANS) sponsored by the U.S. Fish and Wildlife Service and the U.S. Geological Survey (USGS) or fill out an online report on the USGS website at http://nas.er.usgs.gov/sightingreport.asp.
To learn more about lionfish visit: http://collier.ifas.ufl.edu/SeaGrant/pubs/Lionfish%20Fact%20Sheet.pdf
(note at the time this publication was created there had not been any confirmed sightings of lionfish in the Gulf of Mexico-obviously that has changed now!)
Posted by Collier County Sea Grant Agent at 1:35 PM
Friday, July 23, 2010
Friday, July 16, 2010
Thursday, July 15, 2010
We headed out to Barefoot Beach to do a little beach fishing for day 3 of the camp. Man, it was a hot one, but it was another successful day. I wasn't sure how we'd do as far as the fishing, but the kids tore it up!!! I don't think I've ever gone through shrimp so fast in my life. Most of the kids caught at least one fish, while many caught several. One student caught his first fish ever. Unfortunately, as I was helping him get it off the line, the fish slipped out of my hands, and it went right back in the water before I could take a picture of him with his catch!!! (So sorry, Christain, I owe you one).
Posted by Collier County Sea Grant Agent at 6:32 AM
Tuesday, July 13, 2010
Backcountry Flyfishing Club of Naples stopped by to teach our students about fly fishing. These guys are great! The students lenared how to tie their own flies and practiced casting with a fly reel (something I'll admit I can't do!). They did a great job, and were excited about the flies they made and got to keep. Big thanks goes out to the club members!!!
Posted by Collier County Sea Grant Agent at 9:09 PM
Monday, July 12, 2010
Thursday, July 8, 2010
mojarras, hardheaded catfish, lane snapper, porcelain crabs, mud crabs, tunicates, comb jellies, slipper shells, encrusting bryozoans, sauerkraut bryozoans, and sponge pieces.We ended up doing 2 trawl and brought aboard several critters including a sea nettle jellyfish, a 9-armed sea star, banded brittle stars, brief squid, snapping shrimp,
Posted by Collier County Sea Grant Agent at 1:10 PM