pod of humpback whales appears, and one of them swallows both Dory and the submarine. Dory swims about trying to understand the whale's vocalizations. After a few moments, the whale shoots the submarine and Dory out through its blowhole. Dory then mistakes the sub for a "big yellow whale" and speaks whale; saying goodbye. The captain tells the first mate not to enter anything that has happened in the ship's log because nobody would believe it. He then says they should bring the sub up to the surface "before we have a run-in with a sea serpent or an encounter with a mermaid" (references to the original attraction, which included mermaids and a sea serpent). Two rock formations can be seen, one shaped like a sea serpent's head, and the other shaped like a mermaid. The sub then surfaces and reenters the harbor, where a pair of king crabs snap at air bubbles coming from a sewage pipe. An instrumental version of "Beyond the Sea" plays as the submarine docks and the captain thanks the passengers for riding. Submarines The attraction reuses the eight original 1959 Submarine Voyage through Liquid Space attraction vehicle hulls built at the Todd Shipyards in San Pedro, California. Vertical rollers attached at each end of the keel roll within a submerged guide channel. The original diesel engines were replaced by electric battery-powered propulsion units which are charged at the loading dock by contact-less inductive coils, increasing efficiency and eliminating fuel spills. Guests board through a hatch at either end by crossing hinged loading ramps and descending spiral stairs. Twenty aft-boarding guests are seated facing the starboard side and fore-boarding guests are seated facing port. Each submarine originally seated 38 guests, but removal of the diesel engines increased seating to 40 spring-loaded fiberglass seats. Lap sitting of small children is permitted. 46 on-board flotation devices limit maximum capacity to 45 guests and one helmsman. When the boarding ramps are raised the hatches are sealed watertight (but not airtight) and mooring lines released. Although their viewports are below water level, the "submarines" do not actually submerge when "diving". Descent and submersion is simulated with bubbles that rise across the viewports when the vehicles pass through compressed air released under the hull and waterfalls. Each viewport blows fresh dehumidified air across its glass to prevent fogging. Each cabin interior has 40 viewports framed with dark blue mesh, and