Fish identification archive / Cannonball Jelly

Cannonball Jelly

Stomolophus meleagris

I SAW THIS on my dive

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Cannonball jellyfish with a pale domed bell, brown rim and compact ruffled oral arms.
Original educational illustration; not a photograph, occurrence voucher or exhaustive identification key. adult medusa Hemispherical milky bell with brown marginal band, compact frilled oral apparatus and no trailing tentacles. Entire bell and oral-arm silhouette visible.

Fun facts for your next surface interval

  • Long trailing tentacles are absent. [source]
  • Strong currents can overwhelm its swimming. [source]
  • The Georgia account describes separate males and females. [source]

Florida and local context

Florent Charpin’s individual photograph page identifies Stomolophus meleagris 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

How to recognize this animal

A firm rounded jellyfish with a hemispherical bell, often pale with a brown edge. Long trailing tentacles are absent.

Sources: Biology or local occurrence reference

Size and life stages

The Georgia biology account reports bell diameter up to 25 cm; this is not a tentacle or total-body measurement.

Sources: Biology or local occurrence reference

Habitat and where to look

The local photograph is from Palm Beach. The Georgia account covers the coast from North Carolina to Florida.

Sources: Biology or local occurrence reference; Biology or local occurrence reference

Range and local context

The local field guide lists Caribbean, Florida, Gulf of America. The corridor evidence is a historical record from Palm Beach, Florida, not a survey of present distribution.

Sources: Biology or local occurrence reference

What is on the menu?

A species-specific diet was not verified in the recovered sources. No prey list is inferred from relatives.

Daily habits and behavior

Bell pulsations provide movement, but wind-driven currents can overwhelm its swimming and carry animals ashore.

Sources: Biology or local occurrence reference

Mating and the next generation

The Georgia management account describes sexual reproduction, with sperm released into the water and entering a female through the mouth. No Florida reproductive calendar is established here.

Sources: Biology or local occurrence reference

Look-alikes and identification traps

A round bell alone is insufficient; compare the brown edge and compact structures beneath the bell without touching.

Sources: Biology or local occurrence reference

Observe without disturbing

Maintain buoyancy and distance. Do not touch, feed, collect, turn over, detach or reposition the animal or its substrate for a photograph. A historical locality record is not permission to harvest.

Harvest, protection and eating safety

Unknown: exact harvest rules need verification

The neutral gray status means the rules or scope have not been fully verified. Exact species and jurisdiction clearance is unresolved. Unknown is not a protected or prohibited classification.

This color is a qualified summary, not permission to collect or a guarantee that a particular animal is safe to eat.

Can it be hunted or harvested?

Stomolophus meleagris is not Cassiopea. Do not transfer the listed upside-down-jellyfish marine-life rule or food use of processed jellyfish to this species.

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?

Species-specific spearing clearance remains unverified. 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.

Stomolophus meleagris is not Cassiopea. Do not transfer the listed upside-down-jellyfish marine-life rule or food use of processed jellyfish to this species.

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

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.

Sources and review

Reconstructed 2026-11-11; independent biology review pending. Photographs on cited sites are reference material and are not reproduced here.

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