When Invaders have increased health, does Ocean's Hungry Grasp get a bonus when exchanging them for Energy?

When Invaders have increased health, does Ocean's Hungry Grasp get a bonus when exchanging them for Energy?

No. As the Special Rule says, ignore modifiers to Invader Health when trading Invaders for Energy.
This applies to all modifiers, whether permanent (e.g., England Level 5) or temporary (e.g., the Event card Tight-Knit Communities).