It can only be eaten when wearing a Helmet of the Deep or a Depth Galea, otherwise you'll get the following message: "You should only eat this dish when wearing a helmet of the deep or a depth galea and walking underwater." Note that you don't need to be underwater in order to eat this dish.
When successfully using a Coconut Shrimp Bake, Green Sparkles Effect will appear on the user who will get the following message: "Your underwater walking speed while wearing a <helmet of the deep/depth galea> has increased for twenty-four hours." Although this message mentions only one of the diving helmets, both will be affected by this dish's effect.
It is much less useful than it initially was because underwater walking speed was increased with the Winter Update 2012 which also decreased the relative character speed (for characters higher than level 175).
- This item is not dropped by any creatures.