SeaAjWhat SeaAj reads for you
Visibility underwater
An estimate of how far you will see, shown as a range.
Surge on the rocks
Little, some or strong, because surge near rocks is what hurts divers.
Slack water
The window when the current is weakest.
Water and wetsuit
The water temperature and a wetsuit thickness to match it.
Fish and sea in one chart
The day's fishing activity and the sea's calm on the same timeline, so you see when both agree.
When to stay out
- Surge near rocks, caves or the entry and exit points.
- Poor visibility, especially with boat traffic or when you cannot see the surface.
- A sea that is rough or dangerous at the surface: on those days the app says not to dive.
Before you go
- Never dive alone: always with a buddy and a surface buoy with a flag.
- Know your limits and do not push depth or breath-hold time; never hyperventilate before a dive.
- Keep clear of boats and fishing lines, and know the local rules for spearfishing.
- Plan your entry and exit for the current sea, and leave if it gets worse.
- Depths shown by the app are only a guide.
Frequently asked questions
When is the best time to go spearfishing?
When the sea is calm, the water is clear and the current is weak. SeaAj puts calm, visibility and the fish activity on one chart so you see the hours where they agree.
Does SeaAj tell me the water visibility?
It gives an estimate as a range, marked as an estimate. It cannot see your spot: judge the water yourself and do not rely on a number alone.
Other activities
These are estimates, not guarantees. Always look at the sea yourself before going out, do not go alone and wear a life jacket.