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As Shark Week<\/a>, which starts Sunday, July 23, celebrates its 35th season, de Silva will be appearing in her third Shark Week episode since 2020. A research assistant on previous shows about tiger sharks and great whites, de Silva, chief executive officer for the ocean technology company Juice Robotics<\/a>, served as co-host and photographer for this season\u2019s \u201cAlien Sharks: Strange New Worlds<\/a>,\u201d which airs Monday, July 24, at 10 p.m. EST<\/strong>.<\/p>\n In February, she joined host and wildlife conservationist Forrest Galante and the crew for a month to film the show, tooling around the waters off South Africa in search of the strangest sharks they could find. High on their list was the sevengill.<\/p>\n \u201cMost sharks have five gills. The more prehistoric types will have six or seven gills,\u201d said de Silva, who lives in Jamestown. \u201cIn False Bay, South Africa, the sevengills are typically found in kelp forests and get very large, about 10 feet. They can take down seals \u2013 they are sharks \u2013 but they\u2019re thought to be pretty docile.\u201d<\/p>\n But the sevengill sharks were nowhere to be found. Two orcas \u2013 killer whale brothers named Port and Starboard by locals \u2013 were wreaking havoc, de Silva says. They had killed scores of great whites \u2013 actually flipping the whites over on their backs to dine on their livers \u2013 off South Africa, especially around Cape Town, known for its cage diving with great whites. Eventually, the more-transient whites smartly moved on, leaving the orcas to feast on the sevengills, which aren\u2019t able to migrate from the area like the whites.<\/p>\n \u201cWhen we were there, there were a couple of days when about two dozen sevengills washed up dead with their livers missing, proving they were killed by Port and Starboard,\u201d she said. \u201cThose are just the ones that washed up.\u201d<\/p>\n While the sevengills aren\u2019t transient, they seem to have disappeared. But many people in the area thought they must be somewhere in False Bay, south of Cape Town. So, the Shark Week crew went looking. They found about 15 of the sharks in a harbor, under a shipwreck. <\/p>\n \u201cThe sharks were hiding from the orcas in the dark, in about 15 feet of water with the worst visibility,\u201d she said. \u201cI couldn\u2019t see my fins when we were diving. It was crazy. We were swimming through them, bumping them.\u201d<\/p>\n But filming the sharks at depths of about 2,000 meters mostly meant deploying her cameras \u2013 BRUVs (baited remote underwater video), which her company, Juice Robotics, develops, sells and rents \u2013 and coming back in six hours, hoping for a bite. <\/p>\n \u201cThe cameras were not attached to the boat so we were unable to see what we were filming in real time,\u201d she said. \u201cSt. Lucia is a popular sport fishing area. So, we\u2019d go out early in the morning, drop the cameras and go fishing. We\u2019d catch dinner, take a nap, pick the cameras up and then, over beers and dinner, watch the footage and see what we got.\u201d<\/p>\n What they found were numerous shark species in the deep seas around Cape Town and St. Lucia that have seldom been seen before, or not seen at those depths, in those areas. <\/p>\n \u201cDeep-sea animals in general are often very dark colored so they can hide better,\u201d she said. \u201cThey often have really big eyes that seem to glow green when you flash light at them. You also get a lot of really slow-moving sharks. While there is food down there, there\u2019s less food. So, they act very chill to conserve energy until all of a sudden they have to use that energy to go after prey or, if they\u2019re lucky, scavenge.\u201d<\/p>\n Along with the sevengills, one of her favorites were the lantern sharks, which she captured on film attacking bait attached to the camera. (To see footage that de Silva shot of the lantern sharks and other species, go to her Instagram <\/a>account.) <\/p>\n \u201cPeople think of sharks as solitary, but lantern sharks actually school,\u201d she said. \u201cThey only get about a foot and a half long and they\u2019re so cute. They actually bioluminesce themselves. They create their own light. In the videos I\u2019m posting, you can see a shimmer along their body. That\u2019s the light they\u2019re creating. The thought is that maybe males and females have different patterns so they can identify each other.\u201d<\/p>\n Along with the fun of filming sharks, de Silva, who does research for the nonprofit Beneath the Waves, collected data on such things as abundance, diversity and behavior, and plans to publish her findings. Also, through her work with Juice Robotics, her role in Shark Week helps her promote her view of ocean research, which includes innovative, democratic, rugged equipment like the BRUVs that are easy to transport and deploy.<\/p>\n \u201cFor me, Shark Week is such a great chance to represent the future of what I hope ocean science looks like,\u201d she said. \u201cI really was excited to do my first episode because I not only got to do the science, but I got to educate a large audience.\u201d<\/p>\n![\"\"](\"https:\/\/web.uri.edu\/gso\/wp-content\/uploads\/sites\/916\/de-sliva-2-2-768x884-copy-364x419.jpg\")