“To help explore underwater environments without damaging coral or sea life, engineers from UC San Diego created a robot squid (via Hackster.io). Soft robots are less likely to harm aquatic life than rigid ones. Researchers used mainly soft materials like acrylic polymer to build the device, along with a few 3D printed and laser-cut rigid parts.”

https://www.engadget.com/robot-squid-water-jet-propulsion-172035455.html?guce_referrer=aHR0cHM6Ly90LmNvLw&guce_referrer_sig=AQAAAEZmZ6IdFyXBynywCWBx8-22Lt70KMCrZDj0Q0y_5naZzPbA2I0iTwYrLb_YjcssxRUKI6hb6IXHkO2sidc8TZ9Gl1zFQC8jAOZMl59CgTVAx2lbJcs-iR4OU41Hdz-bCSj6Ynt_CQ6XQU8RqgskPE9il3NSKvX0vKY-AwLhnSSO&guccounter=2