NEW ORLEANS (AP) — The creatures living in the depths of the ocean are as weird and outlandish as the creations in a Dr. Seuss book: tentacled transparent sea cucumbers, primitive “dumbos” that flap ear-like fins, and tubeworms that feed on oil deposits.A report released Sunday recorded 17,650 species living below 656 feet, the point where sunlight ceases. The findings were the latest update on a 10-year census of marine life.”Parts of the deep sea that we assumed were homogenous are actually quite complex,” said Robert S. Carney, an oceanographer at Louisiana State University and a lead researcher on the deep seas.Thousands of marine species eke out an existence in the ocean’s pitch-black depths by feeding on the snowlike decaying matter that cascades down — even sunken whale bones.