Reef

One fine day Marvin took me snorkling in Heffelfinger Bay not far from Little Seaside Park. We had been cruising around this crazy coral reef for twenty minutes when suddenly this thing scuttled up out of a crevice. Marvin went wide-eyed and swam like the dickens for the shore. I followed after him in a near-blind panic expecting to be snatched or bitten or stung, but made it to the shore unscathed. As we stood panting and puffing I managed to gasp, "What was THAT?"
"Frankenfish," wheezed Marvin.
"Dangerous, huh?"
"Not usually. Chester Frankenfish. I owe him some money."