<s>
(	O
also	O
known	O
as	O
The	B-Application
Ocean	I-Application
Hunter	I-Application
:	O
The	O
Seven	O
Seas	O
Adventure	O
)	O
is	O
a	O
1998	O
shooting	O
gallery	O
game	O
developed	O
and	O
published	O
by	O
Sega	O
.	O
</s>
<s>
The	B-Application
Ocean	I-Application
Hunter	I-Application
runs	O
on	O
Sega	O
Model	O
3	O
hardware	O
.	O
</s>
<s>
Baroque	O
Sea	O
(	O
Pacific	O
Ocean	O
)	O
;	O
boss	O
Kraken	B-Device
(	O
)	O
;	O
reward	O
5,000	O
;	O
</s>
<s>
Luna	O
Sea	O
(	O
Arabian	O
Sea	O
)	O
;	O
boss	O
Leviathan	B-Algorithm
(	O
Carcharodon	O
megalodon	O
)	O
;	O
reward	O
8,000	O
;	O
</s>
<s>
Tartarus	O
Deep	O
(	O
Bermuda	B-Application
Triangle	I-Application
)	O
;	O
boss	O
Charybdis	O
(	O
Melanocetus	O
)	O
;	O
reward	O
10,000	O
;	O
</s>
<s>
The	B-Application
Ocean	I-Application
Hunter	I-Application
is	O
played	O
by	O
using	O
two	O
mounted	O
turret-like	O
guns	O
on	O
the	O
arcade	O
cabinet	O
.	O
</s>
<s>
Each	O
boss	O
is	O
named	O
after	O
a	O
famous	O
mythological	O
sea	O
monster	O
with	O
the	O
final	O
boss	O
taking	O
on	O
different	O
forms	O
named	O
Dagon	O
,	O
Poseidon	B-Application
,	O
and	O
Rahab	O
.	O
</s>
<s>
In	O
Japan	O
,	O
Game	O
Machine	O
listed	O
The	B-Application
Ocean	I-Application
Hunter	I-Application
on	O
their	O
15	O
November	O
1998	O
issue	O
as	O
being	O
the	O
fifth	O
most-successful	O
dedicated	O
arcade	O
game	O
of	O
the	O
month	O
.	O
</s>
