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On average, coral catshark egg cases contained about 21 particles per case, while Hasselt’s bamboo shark egg cases contained roughly 16.—Melissa Cristina Márquez, Forbes.com, 20 Feb. 2026 Because these egg cases can also float to the surface, should one be found on the beach, Seid advises throwing it gently back into the ocean.—Ashley MacKin Solomon, San Diego Union-Tribune, 8 Dec. 2025 Observations in the wild Four females were observed in the tree canopy in Trésor Regional Nature Reserve, two of which were guarding an egg case called an ootheca.—Lauren Liebhaber, Miami Herald, 24 Apr. 2025 Spiders produce many types of silk, each adapted for a particular purpose, such as anchoring webs, egg cases, trapping fibers, and prey immobilization.—William A. Haseltine, Forbes, 27 Nov. 2024 See All Example Sentences for egg case