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The swollen balls at the tip of the sponge’s upright branches produce packets of sperm. The sponge has a root-like structure known as rhizoid. Each pole is covered in barbed hooks, which are responsible for capturing live prey, like small crustaceans, as they near the sponge. ASEXUAL REPRODUCTION Regeneration All sponges possess a remarkable ability to regenerate lost parts. As the fertilized eggs mature, these contact sites swell up, forming bulges part way up the host sponge’s branches (see photo).It has been less than twenty years since scientists first discovered that sponges could be carnivores.

Since then, marine biologists have discovered dozens of new carnivorous species. It uses the rhizoid to anchor itself to the soft … The vertical branches of the harp sponge are support for filaments and terminal balls. The harp sponge is comprised of one to six horizontal branches, each with a series of vertical poles that reach the end of the branch, which resembles the instrument from which it takes its name. The harp sponge is an extraordinary example of the kind of adaptations that animals must make in order to survive in such a hostile environment.Video about the harp sponge from MBARI’s YouTube Channel:For additional information or images relating to this article, please contact: Kim Fulton-BennettResearch programs at the Monterey Bay Aquarium Research Institute (MBARI) encompass the entire ocean, from the surface waters to the deep seafloor, and from the coastal zone to the open sea. The terminal balls are relatively large, spherical casings full of spermatophoresthat can fertilize other harp sponges. It allows the sponge's sperm to have a wider range when traveling downstream. The swollen balls at the tip of the sponge’s upright branches produce packets of sperm. The wide frame of C. lyra optimizes the chances for successful fertilization. Ten thousand feet below the ocean’s surface, the seafloor is a dark, desolate, and dangerous place where even the most benign-looking creatures can be deadly predators.

The harp sponge’s unusual shape and exposure to currents may also help it to reproduce more effectively. The harp sponges collected by MBARI scientists mark the first time researchers observed the complete cycle of a carnivorous sponge's unique approach to sexual reproduction. The harp s… Once the harp sponge has its prey in its clutches, it envelops the animal in a thin membrane, and then slowly begins to digest it.The harp sponge’s unusual shape and exposure to currents may also help it to reproduce more effectively. These sperm packets are released into passing currents and are captured on the branches of other nearby sponges. Photo: © MBARI 2005Clinging with root-like “rhizoids” to the soft, muddy sediment, the harp sponge captures tiny animals that are swept into its branches by deep-sea currents. Now that’s one hell of a fancy science name but it also has a name that we non-scientific laymen love. The sperm then works its way from the packets into the host sponge to fertilize its eggs. The spermatophores are released by the terminal balls, and sigmas protruding from the sperm are caught by protruding isochelae on the filaments. The need to understand the ocean in all its complexity and variability drives MBARI's research and development efforts.January 16, 2020 – Little red jellies are commonplace near the deep seafloor in Monterey Bay. Their sexual reproduction is similar to higher animals even though their body organization is primitive type. Sponges reproduce both asexually and sexually and they also possess the power of regeneration due which it is almost impossible to kill a sponge. However, carnivorous harp sponges snare their prey—tiny crustaceans—with barbed hooks that cover the sponge’s branching limbs. So, let us learn 15 interesting harp sponge facts can find out what they eat, where they live and how they reproduce.

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