Sea Nettles Factsheet
Article | Updated 4 years ago
- The sea nettle is bluish-white with colourless warts over the surface. It has a flattened dome-shaped bell that is up to 12 cm in diameter. It has frilly, long, central mouth arms, and 24 very long tentacles (see figure).
- Jellies drift with the currents and swim with a pumping action of their bell. They have a central mouth surrounded by the mouth arms. They have a minute polyp stage that attaches to rocks and buds off the tiny jellies which then grow to maturity.
- Sea nettles have been reported from Dawesville, Cockburn Sound, Fremantle and Perth in summer.
- Their sting is extremely painful but not life threatening.
- A sudden burning sting that may persist for many hours. Raised red weals may occur, the redness may spread, and should disappear in 2 to 3 days.
- Do not swim in areas where they have been seen. Wear protective clothing such as a lycra top, skivvy or stinger suit.
- First Aid
- Do not treat with vinegar.
- Remove any tentacles from the skin using tweezers or a gloved hand.
- Neutralise sting with a paste of bicarbonate of soda and seawater, if unavailable wash the area with seawater.
- 4 Apply cold pack, and possibly a pain relieving cream, to the affected area for pain relief. This may need to be repeated for some weeks if the itchiness persists.
- Loisette M. Marsh & Shirley M. Slack-Smith (2010). Field Guide to Sea Stingers and other venomous and poisonous marine invertebrates of Western Australia. Western Australian Museum. Perth, Western Australia.