Hydroid Zoanthid

Fun facts for your next surface interval

• It associates with hydroids. [source]
• H. antumbrosus is a close comparison on similar hosts. [source]
• The Caribbean study records it at sites with persistent strong current. [source]

Florida and local context

Florent Charpin’s individual photograph page identifies Hydrozoanthus tunicans and explicitly places that photograph at Palm Beach, Florida.

A documented past record does not establish present abundance or guarantee an encounter.

Sources: Biology or local occurrence reference

Harvest, protection and eating safety

Can it be hunted or harvested?

Hydrozoanthus tunicans is a zoanthid, not a hydroid despite its common name. FWC allows no more than five single polyps of each of these groups daily within the 20-organism aggregate, using a flexible blade no wider than two inches. This is live collection, not colony-wide harvest or food clearance. Listed marine-life organisms must be landed and kept alive with suitable life support; a recreational saltwater license is required and recreational sale is prohibited. Verify applicable possession and other special limits.

Florida seasons and areas

No affirmative annual season or current-trip openness is established. Check exact mapped boundaries before any take. Blue Heron Bridge designated dive-site waters prohibit marine-life collection, not all Palm Beach County fishing. Biscayne ornamental collection requires a superintendent collecting permit; its mapped seasonal fishing/possession closure runs March 1–May 31, effective March 2026, with properly stowed continuous transit excepted. Pennekamp protects specimens and coral, prohibits tropical-fish collection and spearfishing, and allows fishing only under its designated-area rules; it is not permission to collect ornamental invertebrates. Key Largo Management Area prohibits taking coral and other marine invertebrates. Its exceptions are commercial spiny-lobster and stone-crab trapping and recreational spiny-lobster hand/hand-gear harvest under applicable rules, not recreational collection of the crabs or other taxa here. Sanctuary Preservation Areas prohibit collection and fishing subject only to expressly stated exceptions. These site rules do not establish a corridor-wide prohibition.

Can it be speared?

Do not spear a live-only collection organism. FWC restricts spearfishing near public swimming beaches, fishing piers/bridges and jetties, and in state parks. The Long Key-north Monroe restriction concerns state waters; Key Largo Management Area separately prohibits spearfishing. Federal location alone is not clearance.

Is it safe to eat?

No exact-species, site-specific food-safety clearance or meal frequency was verified. Legal take does not establish safety; some marine toxins survive cooking and freezing. Check current Florida Health advice and shellfish-area status where relevant. No dated, species-matched local menu evidence was verified; recipes remain disabled.

Hydrozoanthus tunicans is a zoanthid, not a hydroid despite its common name. FWC allows no more than five single polyps of each of these groups daily within the 20-organism aggregate, using a flexible blade no wider than two inches. This is live collection, not colony-wide harvest or food clearance. Listed marine-life organisms must be landed and kept alive with suitable life support; a recreational saltwater license is required and recreational sale is prohibited. Verify applicable possession and other special limits.

This review covers the Vero Beach–Key Largo Atlantic corridor: Indian River, St. Lucie, Martin, Palm Beach, Broward, Miami-Dade and Monroe counties. Florida Atlantic state waters and South Atlantic federal waters are distinct jurisdictions. Do not extend a state-water season tag to federal waters or transfer Atlantic rules to Gulf-side Keys waters. Park and sanctuary boundaries can override a species allowance.

Before you act: Confirm the species, date, exact management area, state or federal waters, gear, licenses and current local closures. A local occurrence record never grants permission to take an animal.

Official rules and health guidance

• FWC recreational marine-life requirements and named groups
• Current FAC rule landing page; full adopted definition not exposed
• FWC commercial table for distinctions, not recreational permission
• FWC coral prohibitions
• FWC spearing rules
• NOAA Key Largo Management Area restrictions and narrow lobster/crab exceptions
• NOAA Sanctuary Preservation Areas
• NPS Biscayne collection rules
• FWC Biscayne mapped seasonal closure
• Florida State Parks specimen collection protection
• Pennekamp official visitor rules
• Florida Health seafood toxins
• Florida Health consumption and shellfish-status guidance
• Current eCFR scope, Table 1 note 5 excludes Florida octocorals from South Atlantic FMP scope
• Current eCFR coral rule, read with geographical scope; not a Florida octocoral blanket ban

Reviewed 2026-11-11. Rules and advisories can change; check the linked authorities before acting.

Identification and source cautions

• Reconstructed after workspace loss; new independent source review required.
• Local photos establish historical occurrence only; they were not independently reidentified.
• Unverified reproductive and feeding details are deliberately left unknown.

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