Empty Egg Sac | Whitespotted Bamboo Shark (Chiloscyliium plagiosum) | Japan

In the days leading up to mating among whitespotted bamboo sharks (Chiloscyllium plagiosum), empty egg sacs like the one pictured here appear. These eggs sacs do not contained fertlized embryos. They are empty, and they are not old egg sacs from which juvenile sharks have already emerged. The appearance of these empty eggs sacs seems to coincide with heightened male shark activity, with ensuing courtship and copulation.

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Image Size: 6586x4391 / 82.8MB; https://www.photoshelter.com/support/license#rm; https://www.tony-wu.com/contact-tony-wu; Cartilaginous Fish Shark Carpet Shark Bamboo Shark Animalia Chordata Chondrichthyes Elasmobranchii Orectolobiformes Hemiscyllidae Chiloscyllium plagiosum Bluespotted Bamboo Shark Whitespotted Bamboo Shark Near Threatened: IUCN Red List Reproduction Courtship Copulation Mating Oviparous Eggs Pacific Japan Shikoku Kochi-ken Aki-gun Toyo-cho Kannoura
Contained in galleries: Marine Life Reproduction, Chondrichthyes, Marine Life | Japan

In the days leading up to mating among whitespotted bamboo sharks (Chiloscyllium plagiosum), empty egg sacs like the one pictured here appear. These eggs sacs do not contained fertlized embryos. They are empty, and they are not old egg sacs from which juvenile sharks have already emerged. The appearance of these empty eggs sacs seems to coincide with heightened male shark activity, with ensuing courtship and copulation.