By hanging vertical oyster gardens off our docks, we strengthen the health of our Aquatic Preserve in several ways. Oysters naturally filter pollutants, with each one cleaning up to 50 gallons of water per day, which helps improve water clarity for seagrass meadows. The gardens also create new habitat for crabs, shrimp, and juvenile fish, increasing biodiversity right under our docks. Over time, this added filtration and habitat support a healthier food web, stabilize our shorelines, and enhance the long-term resilience of Charlotte Harbor’s protected waters.
Vertical Oyster Gardens (VOGs) play a quiet but powerful role in helping seagrass thrive. As oysters grow, they naturally filter the water — removing cloudiness and excess nutrients that block sunlight. With clearer water, sunlight can once again reach the seagrass below, allowing these vital underwater meadows to flourish. Each VOG becomes a small beacon of renewal, helping restore balance, beauty, and life to our coastal waters.
Vertical oyster gardens do more than clean the water — they also help restore balance to the ecosystem. By filtering out excess nutrients like nitrogen and phosphorus, oysters reduce the conditions that fuel harmful algal blooms. The clearer water they create allows more sunlight to reach the bottom, supporting the growth of vital seagrass meadows. In addition, clusters of oysters can slow wave action, which helps strengthen shorelines and reduce erosion along docks and waterfronts.
How to Start a Vertical Oyster Garden
These Vertical Oyster Garden strings were prepared in partnership with the Charlotte Harbor Environmental Center using tested materials and approved methods designed to support safe oyster recruitment and healthy shoreline habitat.
Prepare the Oyster Shells
Sanitized oyster shells were used as the substrate. The shells were naturally cured in the sun for approximately six months rather than treated with bleach, making them safe and effective for oyster recruitment. Each shell was drilled through the center before assembly.
Use Approved Coconut Coir String
An approved coconut fiber string (coir) was selected and woven six to seven times for strength and durability. This material has been specifically tested for use in vertical oyster gardens.
Stack the Shells Correctly
A knot is tied at the bottom of the string, then approximately 18 to 20 oyster shells are stacked one at a time. Each shell is placed with the inner cup facing downward and the rough outer surface facing upward to encourage oyster spat attachment.
Attach the String to the Dock
Secure the completed oyster string to your dock using a stainless steel eye screw or similar marine-grade hardware.
Position at the Proper Height
The oyster string should hang freely in the water column and must not touch the bottom. The top shell should remain submerged even at the lowest tide.
Let the Habitat Develop Naturally
Over time, oysters settle on the shells and begin filtering water while creating habitat for small fish, shrimp, and crabs.
We extend our thanks to our dedicated board and committee members who made this evening’s event possible. We are especially grateful to our visiting lecturer, Ashley Cook, Director of Conservation at the Charlotte Harbor Environmental Center and a Florida Master Naturalist, for her insightful presentation, and to Dave Abderhalden, Executive Director of the Charlotte Harbor Environmental Center, for his continued support and partnership. A special thank you to Kelly and Matt Lube, our gracious hosts, for opening their space for this gathering. We also recognize the Island Living Lecture Committee for bringing this event together, Donna Cabella, Jude Smith, Kelly Lube, Holly Parrish, Kim Kitchen, Victoria Hasenfus, and Wendy Carlton, and extend our appreciation to our volunteers for their time and for helping share the word about this event.
The Island Living Lecture Series will foster a social gathering with community education by providing a space for experts to talk about interesting topics that will highlight our islands unique environmental elements, land conservation and community needs.
Island Living Lecture Series is under the heading of “Education & Community Awareness
Committee” of Bocilla Islands Conservancy.
Each oyster can filter up to 50 gallons of water a day, improving clarity and reducing excess nutrients.
The hanging structures provide shelter for small fish, crabs, and shrimp, boosting local biodiversity.
They support oyster populations and improve coastal ecosystems, especially in places like Charlotte Harbor.
Join our conservation programs to protect and restore our island’s ecosystems. Volunteer your time and talents, make a donation to support essential resources, or participate in our adoption program by nurturing sea oats or mangrove propagules, or adopting a mini reef to aid in marine life restoration.
Our programs are designed for volunteers eager to learn about the ecosystem! Participate in activities such as building Vertical Oyster Gardens, propagating mangroves, restoring shorelines, and planting sea oats. Unlike traditional lectures, these hands-on experiences allow you to engage directly with the environment and make a tangible impact.
Volunteer Island Cleanup Team
The Clean Islands volunteer team is dedicated to preserving the beauty of our island. Our passionate group of volunteers comes together to clean vital areas, including easements and beach access points, ensuring our environment remains vibrant and accessible. Thanks to our generous community members and visitors, we have successfully removed approximately 10 tons of construction debris and 6 tons of vegetation, all fueled by the energy and big hearts of our volunteers. Join us in making a real difference—get involved and help us keep BOCILLA Island beautiful.
May 21, 2026
Click Here to Sign Up. Join us in this vital mission to protect and revitalize our aquatic ecosystems! VOGs consist of oyster shells strung together with lengths of rope, designed to hang below docks. Building on the success of our pilot projects at the Marine Life Park and Artificial Reef, we are excited to introduce our upcoming program this fall. This effort not only aims to enrich our park’s biodiversity but also encourages community members to establish similar gardens at their docks.
20 Mini Reefs were installed by Ocean Habitat on May 17, 2023 at the Artificial Reef & Marine Life Park.
If you have a dock, you can purchase your very own Mini Reef, and we’ll help you install it. And if you don’t have a dock, you can still join the fun by adopting a Mini Reef that will be installed at a host location or one of our parks. Best of all, you can adopt a portion of a Mini Reef — every contribution helps, and together we’ll build reefs that clean the water and bring marine life back to our islands. Each Mini Reef filters up to 30,000 gallons of seawater daily while creating a habitat for fish and other marine life.
We are proud to be a Nationally Certified Wildlife Habitat Community, recognizing that our community as a whole met the requirements by certifying 40 individual properties and providing ongoing education that supports and celebrates wildlife conservation.
Receiving a Certified Wildlife Habitat® designation from the National Wildlife Federation means that your property provides the essential elements wildlife need to thrive—food, water, cover, places to raise young, and sustainable practices that support the local ecosystem. This certification recognizes your commitment to creating and maintaining a healthy environment where native plants and animals can flourish.
Be the first to learn about our Island Living lecture series and exciting fundraisers, where we unite to support preservation and environmental education! Stay informed about our upcoming clean-up events and hands-on demonstrations in our parks, like creating oyster strings that benefit our beautiful shores!
Bocilla Islands Conservancy Overview
Bocilla Islands Conservancy is a public, nonprofit, non-political organization working in partnership with the residents of the Bocilla Islands chain, including Don Pedro Island, Knight Island, Little Gasparilla Island, and Thornton Key. Our mission is to preserve the natural habitat of the Bocilla Islands Chain while fostering community engagement and environmental education to ensure a balanced coexistence between the ecosystem and local residents. The Conservancy can customize conservation easements through land acquisition, ensuring sensitive habitats are preserved and protected to maintain the ecological balance of the islands.
Disclaimer:
The content provided on this website is for informational purposes only and reflects the views and opinions of Bocilla Islands Conservancy members. It is not intended as legal, financial, or professional advice. Bocilla Islands Conservancy assumes no responsibility for errors, omissions, or the accuracy of the information provided. Visitors are encouraged to consult qualified professionals regarding any concerns or decisions. By using this site, you agree that Bocilla Islands Conservancy and its contributors shall not be held liable for any actions taken based on the information presented here.