July 12, 2018

Clinging Jellyfish Advisory for Barnegat Bay

by S-FX.com

clinging jellyfish

Source: NJ Department of Environmental Protection News Release, dated July 10, 2018

Clinging jellyfish, a nonnative species with a powerful sting, have been confirmed in the north-central region of Barnegat Bay, prompting the Department of Environmental Protection to expand a recreational-use advisory to the entire bay.

The advisory follows advisories the DEP previously issued for recreational users of northern Barnegat Bay, the Metedeconk River in Ocean County, and the Shrewsbury and Manasquan rivers in Monmouth County.

About 40 clinging jellyfish were confirmed in north-central Barnegat Bay on Monday – at Jonny Allens Cove on the bayside of Island Beach State Park and in eelgrass beds on the north side of Tices Shoal, a popular boating and watercraft area on the bay side of the park. The jellyfish collected in both areas were in varying stages of maturation.

The clinging jellyfish is not known to inhabit ocean beaches or other sandy areas but tends to attach itself to submerged sea grass and algae in back bays and estuaries, areas not heavily used for swimming.

Recreational users of the bay, including those using the popular Tices Shoal area, are advised to be vigilant to the possible presence of clinging jellyfish. Clinging jellyfish stings can produce severe pain, muscle cramping and other localized symptoms. In some individuals, stings can result in hospitalization.

In Barnegat Bay, beds of sea grass can provide ideal habitat for clinging jellyfish, which are very small and hard to see in the water. The clinging jellyfish ranges from the size of a dime to about the size of a quarter. It has a distinctive red, orange or violet cross across its middle. The DEP encourages the public to use common sense and caution in areas where jellyfish are suspected. Anyone wading through these areas, especially near sea grass, should wear boots or waders to protect themselves.

The clinging jellyfish was first confirmed in New Jersey in 2016 in the Manasquan River at the Point Pleasant Canal. The DEP is working in partnership with Montclair State University to continue clinging jellyfish surveys in the bay.

If stung by a clinging jellyfish:

  • Apply white vinegar to the affected area to immobilize any remaining stinging cells.
  • Rinse the area with salt water and remove any remaining tentacle materials using gloves or a thick towel.
  • A hot compress or cold pack can then be applied to alleviate pain.
  • If symptoms persist or pain increases instead of subsiding, seek prompt medical attention.

People are advised against trying to capture clinging jellyfish. Take a photograph if possible and send it to Dr. Paul Bologna at bolognap@mail.montclair.edu or Joseph Bilinski at joseph.bilinski@dep.nj.gov along with location information.

For a fact sheet on clinging jellyfish, visit www.nj.gov/dep/docs/clinging-jellyfish-factsheet.pdf.

For a PowerPoint presentation on DEP clinging jellyfish research, visit www.nj.gov/dep/docs/clinging-jellyfish-distribution.pdf.

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UNKNOWN

There is limited data available to quantify Wetland and Riparian Buffer Preservation, or updated data to quantify Wetland Acreage. The BBP has obtained funding and will begin assessment efforts for both targets, in the next few years.

 

 Hard Clam abundance has not been updated since 2012. Recovery of the stock will be guided by the Fishery Management Plan for Hard Clams, which is under development with the NJDEP, BBP, and other organizations. Reclam the Bay and other partners have continued to plant clams for restoration purposes. Continued plantings in strategic locations which maximize survival and reproduction is one strategy to pursue in the coming years. This work can use a model developed by Rutgers with BBP funding which identified areas where planted clams could have the greatest dispersal of their larvae and thus potentially maximally contribute to the recovery of the stock.

 Water Withdrawals were over the target in the 2021 report; USGS has not yet completed its latest update, so a definitive determination of status is not available. However, additional NJDEP data show that it is likely that we continue to not meet the target. Per capita water use has gone down, demonstrating the effectiveness of water-saving appliances and practices, but that decrease has been offset by population gains. 


IN PROGRESS

New maps quantifying Submerged Aquatic Vegetation extent were developed, but poor image clarity resulted in a high degree of uncertainty in the total acreage. NJDEP and Rutgers are working to resolve the uncertainty of these maps, and improve the total acreage estimate. Funding has also been obtained for further research and restoration activities. Several groups are developing potential restoration actions.

The USGS has completed the first phase of its study to identify minimum ecological flows in select Barnegat Bay tributaries. USGS scientists compared streamflow statistics between historical and current time periods to better understand trends in watershed flow conditions. This work provides a foundation for developing ecological flow targets in the Barnegat Bay watershed.  Similar to SAV extent, funding (approximately $450K) has been obtained by the BBP to complete the remaining phases necessary for threshold determination.

 

TARGETS ACHIEVED

No targets can be considered “Achieved” at this time.

 

NOT ACHIEVING

Several Public Swimming Beaches exceeded their safe swimming standards more frequently than during their baseline time period (2016-2018).

While most beaches are routinely safe for swimming, several problematic areas such as Beachwood, Hancock, Windward, and several lake beaches need track-down studies and restoration to pinpoint and address sources of bacteria.

Acres of Approved Shellfish Waters decreased from the last report. While this decrease was small, it represents a loss of previously approved waters. Similar to public beaches, track-down studies and restoration work are needed to pinpoint and address sources of bacteria.

 

Clinging Jellyfish Advisory for Barnegat Bay

Source: NJ Department of Environmental Protection News Release, dated July 10, 2018

Clinging jellyfish, a nonnative species with a powerful sting, have been confirmed in the north-central region of Barnegat Bay, prompting the Department of Environmental Protection to expand a recreational-use advisory to the entire bay.

The advisory follows advisories the DEP previously issued for recreational users of northern Barnegat Bay, the Metedeconk River in Ocean County, and the Shrewsbury and Manasquan rivers in Monmouth County.

About 40 clinging jellyfish were confirmed in north-central Barnegat Bay on Monday – at Jonny Allens Cove on the bayside of Island Beach State Park and in eelgrass beds on the north side of Tices Shoal, a popular boating and watercraft area on the bay side of the park. The jellyfish collected in both areas were in varying stages of maturation.

The clinging jellyfish is not known to inhabit ocean beaches or other sandy areas but tends to attach itself to submerged sea grass and algae in back bays and estuaries, areas not heavily used for swimming.

Recreational users of the bay, including those using the popular Tices Shoal area, are advised to be vigilant to the possible presence of clinging jellyfish. Clinging jellyfish stings can produce severe pain, muscle cramping and other localized symptoms. In some individuals, stings can result in hospitalization.

In Barnegat Bay, beds of sea grass can provide ideal habitat for clinging jellyfish, which are very small and hard to see in the water. The clinging jellyfish ranges from the size of a dime to about the size of a quarter. It has a distinctive red, orange or violet cross across its middle. The DEP encourages the public to use common sense and caution in areas where jellyfish are suspected. Anyone wading through these areas, especially near sea grass, should wear boots or waders to protect themselves.

The clinging jellyfish was first confirmed in New Jersey in 2016 in the Manasquan River at the Point Pleasant Canal. The DEP is working in partnership with Montclair State University to continue clinging jellyfish surveys in the bay.

If stung by a clinging jellyfish:

  • Apply white vinegar to the affected area to immobilize any remaining stinging cells.
  • Rinse the area with salt water and remove any remaining tentacle materials using gloves or a thick towel.
  • A hot compress or cold pack can then be applied to alleviate pain.
  • If symptoms persist or pain increases instead of subsiding, seek prompt medical attention.

People are advised against trying to capture clinging jellyfish. Take a photograph if possible and send it to Dr. Paul Bologna at bolognap@mail.montclair.edu or Joseph Bilinski at joseph.bilinski@dep.nj.gov along with location information.

For a fact sheet on clinging jellyfish, visit www.nj.gov/dep/docs/clinging-jellyfish-factsheet.pdf.

For a PowerPoint presentation on DEP clinging jellyfish research, visit www.nj.gov/dep/docs/clinging-jellyfish-distribution.pdf.

Contact Clinging Jellyfish Advisory for Barnegat BayContact Clinging Jellyfish Advisory for Barnegat Bay
clinging jellyfish
Photo credit: Mary Carman Woods Hole Oceanographic Institute