Free The Shark Rider by Ellen Prager

the Squids’ pint-sized fish-talker, ran for the water and dove in. He swam out into the lagoon. Sam ran into the water as well. She dove in, swam about twenty feet out, and ducked under. Rosina took off for the dock.
    The rest of the red team spread out along the sand, forming a widely spaced line. The flat-nosed, dark-haired surfer Squid seemed to be their leader. He confidently shouted, “Forward.” Together, they dove, swam out into the lagoon, and then popped up to reform their line.
    â€œA search grid. Good strategy, Squids!” Coach yelled.
    â€œGo, Sam. Hurry, Rosina,” Tristan shouted.
    Rosina ran to where Henry was perched on a dock piling. After a short teenager-pelican powwow, the bird took off and began gliding high up over the lagoon, looking down.
    â€œInteresting, Snappers,” Coach commented.
    The Squids continued their coordinated swim in the lagoon.
    Tristan pointed offshore. “Oh, no, check out the fish.”
    A school of small silver fish leapt repeatedly out of the water in front of the Squids. A head popped up amid the porpoising fish. It was Price. He lookedtoward the Snappers and waved with the smirkiest expression ever. He then dove back in among the leaping fish.
    Rosina joined the other Snappers. Tristan could hardly contain himself. He wanted to get out there and start searching. He wondered if their great strategy was so great after all. He heard a sharp whistle. Fish boy was waving the red team over.
    â€œNice work, Price. Looks like the Squids have found their chest. Better get a move on, Snappers,” Coach shouted.
    â€œWhere’s Sam?” Ryder complained. “What’s taking her so long?”
    Moments later, Henry circled the group and then landed near Rosina. Sam ran out of the water. Both girls began talking at once. The boys looked from one girl to the other, their heads ping-ponging back and forth.
    â€œWhoa,” Tristan finally said. “One at a time.”
    Sam nodded to Rosina.
    â€œHenry says the chest is near the big brain coral next to where Scarface likes to rub his back in the sand.”
    Tristan and the others looked at her like she just spoke in a language no one on Earth could possibly understand. “Where the heck is that?”
    â€œDon’t worry, follow me. I know,” Sam said running into the lagoon.
    â€œHope your sonar works better than Henry’s directions,” Ryder said.
    â€œHey,” Rosina growled.
    They sprinted for the water. Tristan tripped in the soft sand, doing a perfect nosedive onto the beach. Typical, he thought. He jumped up, hoping nobody, especially Brianna, had noticed. Tristan dove into the lagoon and quickly caught up with the others. About 150 yards from shore, Sam dove down and pointed to a yellow coral covered with squiggly ridges. Some eight feet behind it and to the right was a three-foot-long brown chest with a blue flag strapped on top. The water was about twelve feet deep.
    Back at the surface, Ryder swam to gain speed and jumped up to see the Squids. He came back to the group treading water over the chest. “They’ve found their chest, but it doesn’t look like they’re moving it yet.”
    Ryder and Tristan dove down and tried to pick up the wooden box. The other teens put their heads underwater to watch. The two boys strained, but the chest barely came off the sand.
    â€œIt’s too heavy to carry,” Tristan said back at the surface.
    â€œWhat if we push it?” Sam suggested.
    As a group, they dove down and tried to push the chest forward. It moved about an inch before getting solidly stuck in the sand. The teens headed up.
    Ryder jumped again to see how the other team was doing. “They’ve started moving to the beach.”
    â€œMaybe one of us should go over there and see how they’re doing it?” Hugh suggested.
    â€œUh, wait,” Rosina said. “I have an idea. I think. Something Ms. Sanchez said last