Toxins
Ciguatera
Scombroid
Tetrodotoxin (e.g. pufferfish)
Shellfish poisoning
Amnesic shellfish poisoning
Diarrheal shellfish poisoning
Neurotoxic shellfish poisoning
Paralytic shellfish poisoning
Stingers
Stingray injury
Venomous fish
Cone shell
Lionfish
Sea urchins
Crown-of-Thorns Starfish
Stonefish
Other: Catfish, zebrafish, scorpion fish
Nematocysts
Coral reef
Fire coral
Jellyfish (Cnidaria)
Box jellyfish
Irukandji syndrome
Sea wasp
Portuguese man-of-war
Sea anemones<unk> 
Phylum porifera (sponges)
Bites
Alligator and crocodile attacks
Octopus bite
Shark bite
Infections
Vibrio species in saltwater
Aeromonas species in freshwater
Ciguatera
Scombroid
Tetrodotoxin (e.g. pufferfish)
Shellfish poisoning
Amnesic shellfish poisoning
Diarrheal shellfish poisoning
Neurotoxic shellfish poisoning
Paralytic shellfish poisoning
Amnesic shellfish poisoning
Diarrheal shellfish poisoning
Neurotoxic shellfish poisoning
Paralytic shellfish poisoning
Stingray injury
Cone shell
Lionfish
Sea urchins
Crown-of-Thorns Starfish
Stonefish
Other: Catfish, zebrafish, scorpion fish
Coral reef
Fire coral
Jellyfish (Cnidaria)
Box jellyfish
Irukandji syndrome
Sea wasp
Portuguese man-of-war
Sea anemones<unk> 
Box jellyfish
Irukandji syndrome
Sea wasp
Irukandji syndrome
Alligator and crocodile attacks
Octopus bite
Shark bite
Vibrio species in saltwater
Aeromonas species in freshwater
Papules
Insect bites
Scabies<unk> 
Cercarial dermatitis (Swimmer's Itch)
Sub Q Swelling and Nodules
Myiasis
Tungiasis
Loa loa
African Trypanosomiasis
Onchocerciasis
Ulcers
Tropical pyoderma
Leishmaniasis
Mycobacterium marinum
Buruli ulcer
Dracunculiasis (Guinea Worm disease)
Linear and Migratory Lesions
Cutaneous larvae migrans
Photodermatitis
Insect bites
Scabies<unk> 
Cercarial dermatitis (Swimmer's Itch)
Myiasis
Tungiasis
Loa loa
African Trypanosomiasis
Onchocerciasis
Tropical pyoderma
Leishmaniasis
Mycobacterium marinum
Buruli ulcer
Dracunculiasis (Guinea Worm disease)
Cutaneous larvae migrans
Photodermatitis
See also domestic U.S. ectoparasites
Seabather's eruption
Toxins
Cat-scratch disease
Ciguatera
Shark bite
Scombroid
Tar burn
Tetrodotoxin 