A salt water fishing boat is inherently dangerous...

[rpcrowe]

For a cell phone that is There is usually a lot of salt water spray and you are generally pretty wet if there is any kind of a sea kicking up. I didn't carry my Fuji XP-60 underwater camera (honestly I forgot it) but wanted to capture some shots of the Yellowfin Tuna and Dorado (AKA: Mahi-Mahi) that we caught yesterday, fishing in the Pacific off Mexico from a San Diego based boat, so I used my iPhone 6-S Plus which is really a pretty fair camera for snapshots like this.

However, I was concerned about the salt spray and the generally wet environment. So, locking the barn door after the horse is gone, I just purchased an inexpensive "waterproof" plastic case for my iPhone to keep in my tackle bag for further adventures. I do keep the XP-60 with my fishing gear but, I had it out charging when I left my house at 2:00 AM to meet my friends for the trip. Naturally, at that time of the morning (night) I am not very competent in the inventory of my gear...

The case is advertised to be good for protecting the camera fully submerged in 20 feet (~6 meters) for up to two-hours. However, at this price (under $20 USD), I have no expectations of submerging the phone. However, I am sure that it will be good enough to protect the iPhone from the salt water spray that I experienced yesterday.

I caught the largest tuna of my party - a bit over 20 pounds. Actually, these smaller Yellowfin tuna (aka: Ahi) are better eating than the monsters.

[NorthernFocus]

...Actually, these smaller Yellowfin tuna (aka: Ahi) are better eating than the monsters.

Fill in "yellowfin" with xyz species and that's the most common refrain of the salt water angler

And typically true

[rpcrowe]

Actually the smaller fish are safer since they have had less time in the ocean to absorb mercury and other heavy metals. The swordfish seem to be the most dangerous since they are long lived.

[DanK]

Actually the smaller fish are safer since they have had less time in the ocean to absorb mercury and other heavy metals. The swordfish seem to be the most dangerous since they are long lived.

Across rather than within species, it's also a function of where they are on the food chain--what things they eat, and how badly contaminated the prey are.