A Short Quip Followed By A Long Groan

A long-time reader (Hi, Mom!) forwarded me an E-mail full of puns today. Here's the nautically-flavored one that got the loudest groan out of me:
A marine biologist developed a race of genetically engineered dolphins that could live forever if they were fed a steady diet of seagulls. One day, his supply of the birds ran out so he had to go out and trap some more. On the way back, he spied two lions asleep on the road. Afraid to wake them, he gingerly stepped over them.

Immediately, he was arrested and charged with transporting gulls across sedate lions for immortal porpoises.
All together now -- Uohh-hhh