- If the player is using a weapon that deals more than 50 damage, such as a fresh Ham Bat, The player can kill a Jellyfish in one hit, meaning they will only take 5 damage without protection from the shock. Because eating a dead Jellyfish restores 10 Health, it means the player can gain 5 Health very easily. Because of how common Jellyfish are, it is a good tactic to restore Health fairly quickly.
- Jellyfish are the only mobs that can cause direct health damage to the player while they are on a Boat.
- Jellyfish are the only Shipwrecked-exclusive food that counts as both fish and monster.
- Real life Jellyfish do not cause an electric shock. Instead, they inject poison to their victim on contact, which is described as feeling similar to electrocution.