You can't use it as a beam without spending a hero point to temporarily overcome the flaw of touch, something I didn't mention when you mimiced his power. This is what you currently have (I've been very tired, can you tell):
Regeneration +8
Disintegration +8 (extra: continuous, disruption; flaw: touch)
Aquatic +7 [Energy blast (flaw: require sufficient water source), Water Breathing, Swimming, Super-senses] (stunt: immunity (pressure))
Natural Weapons +7 (extra: retractable, extra: deflection)
Snare +7 (flaw: touch)
You can edit your post on the IC thread accordingly. I'll assume you just want to attack something within range otherwise tonight.