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Marine Life & Conservation

Free Manatee Materials Available for Florida Boaters & Water Users

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The July 4th holiday weekend may be over for another year but the Save the Manatee Club urges resident and visitors to keep manatees in mind every day while enjoying Florida state’s waterways. The Club has a free Boating Safety Packet that provides tips to protect manatees as well as information on regulatory signs and a number for reporting an injured manatee.

Manatees are found in shallow, slow-moving rivers, bays, estuaries, and coastal water ecosystems of the southeastern United States. They can live in fresh, brackish, or salt water. They prefer waters that are about 3 – 7 feet deep. Along the coast, they tend to travel in water that is about 10 – 16 feet deep. Manatees are herbivores, feeding on a large variety of submerged, emergent, and floating plants. They are slow-moving, and usually only swim about 3 – 5 miles per hour. Because they are mammals, they need to surface to breathe air. All of these factors make them vulnerable to boat strikes.

Watercraft-related manatee mortality is the leading identified cause of manatee death in Florida. Manatees can suffer injury and death due to the crushing impact of the hull and/or the slashing of the propellers. Last year in 2016, a record 105 manatees were killed by watercraft in Florida, and many more manatees suffered non-fatal injuries from boat strikes.

The Club offers a number of free public awareness materials to help boaters protect manatees from watercraft collisions. One of these items is a Boating Safety Packet, which contains a weatherproof boat decal with a hotline number for reporting manatee injuries, deaths, or harassment. It also includes a waterproof waterway card that was created in conjunction with the Florida Fish and Wildlife Conservation Commission (FWC) and U.S. Fish and Wildlife Service.

Laminated with a hole in the corner so it can be easily hung and kept on board a vessel, the waterway card features four simple tips to help protect manatees. Because manatees may be difficult to see, photos are provided that show what a manatee’s snout or back looks like when it breaks the surface of the water as well as a photo of a flat swirl on the water’s surface, called a “manatee footprint,” that is created when the manatee swims. The flip side of the card includes examples of regulatory signs posted for manatee protection, along with a description and a demonstration photo of a vessel operating at the speed for each zone. Information on the card is provided in English, French, Spanish, and German, so it is suited for Florida’s many visitors.

Other items that Save the Manatee Club provides free of charge include waterproof banners for boaters and public awareness signs for Florida shoreline property owners. The bright yellow banners read “Please Slow: Manatees Below,” and can be used to warn other boaters if a manatee is spotted while out on a waterway. In addition, free aluminum dock signs with a similar message are available for Florida shoreline property owners.

To get the free Boating Safety Packet, waterproof banner, or waterway sign, please send an email to Save the Manatee Club at education@savethemanatee.org or call toll free 1-800-432-JOIN (5646). Send your mailing address to get the free boating safety packet and waterproof banner. To receive the free waterway sign, please send the address where the sign will be posted and the mailing address, if different.

More Manatee Protection Tips for Boaters can be found on the Club’s website at savethemanatee.org/boatertips. The webpage includes a link to download the free Manatee Alert App for iPhones and iPads, which notifies boaters when they are approaching manatee speed zones and helps facilitate the reporting of injured manatees and manatee harassment. You can also view the Club’s new “Safe Boating Tips to Protect Manatees” video.

Marine Life & Conservation

New report shows simple measures needed to cut beach plastic pollution

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The Marine Conservation Society has launched its annual State of our Beaches 2023 report, highlighting the need for less single-use plastic items and more refillable options.

The charity’s beach cleaning programme, now in its 30th year, asks volunteers to record all litter that they find within a 100-metre stretch of beach. By gathering vital data from across the UK and Channel Islands, the charity creates change for cleaner seas and a healthier planet through policy and industry change. Last year, over 148 kilometres of beach were surveyed by volunteers, who removed 17,208kgs of litter from our coast.

Using data collected by over 14,000 volunteers, the State of our Beaches 2023 report shows that half of all litter collected came from public sources – either dumped, blown or washed onto our beaches.

Drinks-related litter, such as plastic bottles, caps and cans were one of the most found items, with an average of 16 found per 100 metres of beach surveyed. This figure is up 14% compared to the charity’s 2022 report.

Plastics caps and lids were recorded on 89% of surveys, with over 30,000 found in total. Plastic bottles were also commonly collected, with 73% of surveys finding this single-use item – a 4% increase compared to 2022. The charity’s inland litter pick survey, Source to Sea, also reported finding plastic bottles on 92% of cleans.

However, the charity’s State of Our Beaches 2023 report also indicates that some types of litter are on a downward trend. Although still in the top 10 litter items, disposable plastic cutlery, trays and straws were found on 5% fewer beaches across the UK, showing that bans on these plastic items between 2022 – 2023 could be working. The presence of plastic cotton bud sticks also dropped by 14%.

Lizzie Price, Beachwatch Manager at the Marine Conservation Society, said, “Half of the litter found on our beaches originates from public sources, underscoring the pressing issue of single-use plastic. Evidence shows that refillable alternatives and litter return schemes effectively reduce rubbish, as demonstrated by the decline our data has shown in items like plastic bags and disposable cutlery.

“Urgent and decisive action from UK governments is needed to accelerate our shift towards a circular economy, where we reuse, repair and recycle. The public needs greater access to refillable products and systems need to be implemented in which manufacturers are responsible for their waste.”

Governments across the UK have committed to delivering deposit return schemes from October 2025. However, the proposed scheme in England does not include glass items, despite glass being found on 52% of beaches in 2023. The charity is calling for governments across the UK to introduce compatible all inclusive deposit return schemes as soon as possible. This would see aluminium cans, and plastic and glass bottles have a 20p deposit which would be returned when recycled which would reduce drinks-related pollution.

Businesses are, however, starting to take refillable and reusable options into their own hands. Supermarket chain, Aldi, the largest corporate funder of the charity’s 2024 Beachwatch programme, is already leading the charge in refillable items by trialling refillable options for cereals and porridge oats in their stores over the past 5 months.

Plastics and Packaging Director, Luke Emery, from Aldi, who are running 4 beach cleans for staff and volunteers in 2024, said, We are continually working to reduce single-use plastics and packaging, and making unpackaged product options more commonplace for our customers is a key part of this. We are really pleased with the uptake of our refillable range so far by customers. Not only are we making sustainable shopping more accessible, but we also offer refill products for a better price than the packaged alternative, helping our customers save money.”

Marine litter is one of the biggest threats to our seas, with plastic breaking down over time into microplastics and threatening marine life which can ingest or become entangled in them. The Marine Conservation Society is urging the UK Government to move faster on its policies to cut down plastic waste and prevent items from reaching our seas.

To find out more about the charity’s beach cleans and how to get involved, please visit mcsuk.org/beach-cleans

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Guarding Against Coral Invaders

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Protecting (Dutch) Caribbean Reefs from Unomia stolonifera

Recent reports highlight the concerning spread of the invasive soft coral, Unomia stolonifera, currently devastating Venezuela’s marine ecosystems and detected in Cuba. With the potential threat of its expansion to the (Dutch) Caribbean islands, urgent action and awareness are essential to safeguard marine biodiversity and local economies from possible catastrophic consequences.

Invasive species are animals or plants from another region of the world that don’t belong in their new environment. These species can have major ecological effects by decimating native flora or fauna. They can also cause large economic losses and impact human health. Invasive species also pose a significant threat to marine ecosystems worldwide, including the Dutch Caribbean. Among these invaders is the octocoral species Unomia stolonifera or “Pulsing Xenia”, originally from the Indo-Pacific. With its rapid growth and lack of natural predators, this species can outcompete native species and disrupt fragile marine habitats such as seagrass beds and coral reefs.

Background

The invasive soft coral U. stolonifera was first identified in 2014, off the coast of Venezuela. It is believed to have been introduced via the illegal aquarium trade.  Since this species can reproduce sexually and asexually (or fragment), even small pieces can regenerate to spread.  Once introduced it quickly took over shallow reefs and hard substrate at depths of 0-50 meters, outcompeting local corals and seagrass for space.  Follow on surveys found that this coral species exhibited average percentage cover as high as 80%, vastly outcompeting native corals. In highly colonized areas, fish are disappearing due to loss of habitats.

In 2022, during a survey conducted in Cuba by the University of Havana, an unknown octocoral was discovered which was later identified as the invasive Unomia stolonifera. It is suspected that the coral larvae arrived in ballast water from fossil fuel ships originating from Venezuela, as nearby sites adjacent to Venezuelan ports have been heavily affected by the invasion.

How to help

Prevention through continuous monitoring, particularly in high-risk areas such as marine harbors and oil facilities, is paramount. Early detection plays a pivotal role in mitigating the threat posed by Unomia stolonifera.

The public’s involvement and awareness are also vital. Local communities, recreational divers, tourists, and all stakeholders are urged to participate in early detection efforts by reporting sightings (photo, location and date) of this invasive coral to their respective Protected Area Management Organization (PMO’s)- the Fundacion Parke Nacional Aruba (FPNA)STINAPA BonaireCARMABI Curaçao Saba Conservation Foundation (SCF)Nature Foundation St. Maarten (NFSXM) and St. Eustatius National Parks (STENAPA). If an invaded area is confirmed, follow the recommendations by the local PMO’s.

Keys to Success

Despite the challenges, early detection is key to mitigating the threat posed by Unomia stolonifera. With continued vigilance, research, and community engagement, there is hope for containing this potential issue before it becomes a major threat.

About the DCNA

The Dutch Caribbean Nature Alliance (DCNA) supports (science) communication and outreach in the Dutch Caribbean region by making nature related (scientific) information more widely available through amongst others the Dutch Caribbean Biodiversity Database, DCNA’s news platform BioNews and through the press. This article contains the results from several scientific studies but the studies themselves are not DCNA studies. No rights can be derived from the content. DCNA is not liable for the content and the in(direct) impacts resulting from publishing this article.

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