Actually, I rented Jaws unleashed. It had serious potential, like so many games, but ultimately failed. A similar title (in so far as playing a sea creature) that worked quite well if one could overcome the cheesy factor, was the Dreamcast's Ecco: Defender of The Future. It later came to the PS2...and that is the definitive title I would recommend you try if you're looking for a sea game that worked. The inclusion of your voice would have perfected it...although you would have been relegated to narration, because none of the animals were voiced and humans were only mentioned and never seen.
"hmm hmm hn hmm...oh, Hello." Tim did a wonderful job voicing the monitor of installation 04. 343 Guilty Spark is one of my favorite characters beside Cortana in the Halo Universe. I was disappointed by his destruction in Halo 3. It almost looked as though he had become an ally before he malfunctioned in the end. Unfortunate.
Anyway, thanks for sending this our way. Good stuff. And again...It's great to have you back. 