1. Echinoderms: Sea Star Time-lapse: Eating Mussel

    02:47

    from Shape of Life / Added

    151K Plays / / 3 Comments

    Even though mussels can close-up tightly, sea stars successfully prey on them.

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    • HIGH VELOCITY GREAT WHITE SHARK ATTACK OF A SEAL DECOY

      00:10

      from marius van straaten / Added

      124K Plays / / 10 Comments

      This amazing shot shows a shark attacking a seal decoy. Great Whites hunt seals by coming from the deep at high speed and hitting the seal out of the water. The sharks speed is enough to lift the seal and itself often weighing over a 1000 kg straight out of the water. This video captures this action clearly in Table Bay, the biggest breeding ground of Great White sharks in the world.

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      • Echinoderms: Sea Star Time-lapse: Pycnopodia Chases Snails

        02:19

        from Shape of Life / Added

        17.8K Plays / / 0 Comments

        Watch the voracious predatory sun star chase down a snail.

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        • White sharks scavenging on whales

          04:32

          from R.J. Dunlap Marine Conservation / Added

          This video is a visual abstract for the scientific publication: Fallows C, Gallagher AJ, Hammerschlag N. (2013). White sharks (Carcharodon carcharias) scavenging on whales and its potential role in further shaping the ecology of an apex predator. PLOS ONE. The full article can be seen here: http://dx.plos.org/10.1371/journal.pone.0060797 ------------------------- Edited by: Christine Shepard - http://christineshepard.com/ Contributing Cinematographer: Matthew Hawksworth, 504 Producers Contributing Photographer: Chris Fallows - http://www.apexpredators.com/ Contributing Cinematographer and Photographer: Neil Hammerschlag - http://www.rsmas.miami.edu/people/faculty-index/?p=neil-hammerschlag Contributing Photographer: Austin Gallagher - http://austingallagher.com/ Music by: Jonsi, "We Bought a Zoo" - http://jonsi.com/ ------------------------- ABSTRACT: Scavenging, a result of a temporary pulse of resources, occurs in virtually all ecosystems containing carnivores, and is an important energy transfer pathway that can impact ecosystem structure and function, and this ecological significance has largely been considered from a terrestrial standpoint; however, little is known about the role of scavenging in shaping the behavioral ecology of marine species, specifically apex predators. Here we present findings from multiple opportunistic observations of white sharks scavenging on whale carcasses in False Bay, South Africa. Observations of white sharks scavenging over successive days provided evidence of strategic and selective scavenging by this species. Moreover, extended daily observations permitted recordings of unique social, aggregative, and feeding behaviors. We further compare these data against observations of natural predation by sharks on seals in the study area. We discuss these data in relation to environmental conditions, shark social interactions, migration patterns, whale biology, and behaviorally-mediated trophic cascades. While the appearance of a whale carcass is largely a stochastic event, we propose that white shark scavenging on whales may represent an underestimated, yet significant component to the overall foraging ecology of this species, especially as individuals attain sexually maturity. ------------------------- The RJ Dunlap Marine Conservation Program (RJD) is a joint initiative of the University of Miami’s Rosenstiel School of Marine & Atmospheric Science and Abess Center for Ecosystem Science and Policy. The mission of RJD is to advance ocean conservation and scientific literacy by conducting cutting edge scientific research and providing innovative and meaningful outreach opportunities for students through exhilarating hands-on research and virtual learning experiences in marine biology. For more information, please visit: http://SharkTagging.com

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          • Espen Rekdal Showreel 2014

            07:14

            from Espen Rekdal / Added

            4,866 Plays / / 16 Comments

            This showreel consists of several short segments from different projects I'm currently working on. With the exception of the sperm whale and starfish time lapse sequence, all are shot during 2014.

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            • New Forest Hobby 25/07/14 - Predation

              03:00

              from Carnyx Wild / Added

              2,715 Plays / / 1 Comment

              Early evening. The female Hobby hears the airborne threat and leaves the nest to defend it. The chick remains perfectly still but within 30 seconds the Goshawk is on the nest and after a couple of pecks it takes the chick to the edge of the nest and then away.

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              • The maid did it! The surprising case of the sponge-cleaning brittlestar

                03:00

                from Presentation Boot Camp / Added

                2,614 Plays / / 0 Comments

                Symbiosis is defined as two organisms living together. In the sea, the best known symbioses are those in which both organisms benefit, and these are called mutualisms. The brittlestar that lives inside the gray tube sponge was thought to be a mutualism, with the brittlestar gaining a safe home, and the sponge getting cleaned. Strangely, the brittlestar was only found on the one tube sponge species, despite others being available, and this prompted experiments to better understand their relationship. Gray tube sponges that had brittlestars grew at the same rate as those without brittlestars, suggesting no benefit of cleaning. But, gray tube sponges released their babies from the inside walls of their tubes, unlike other tube sponge species, and it was discovered that brittlestars eat these babies. So, experiments revealed that brittlestars are mostly parasites of the gray tube sponge.

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                • Sponges of the Caribbean: What ecological factors most affect them?

                  03:00

                  from Presentation Boot Camp / Added

                  2,307 Plays / / 0 Comments

                  Sponges are animals that eat tiny food particles as they pump water through their bodies. They are very common on Caribbean coral reefs, and come in all shapes, sizes and colors. Previous research concluded that sponge growth is most limited by food particle availability. But sponges are also used as food by angelfishes that nibble on them, decreasing their growth. Which is more important, food or predation? We tested both possibilities by putting sponge pieces inside and outside of protective cages in shallow water, and in deep water where there are more food particles. After a year, sponges in cages grew a lot more because they were protected from angelfishes, but sponges did not grow more in deep water. Therefore, sponges are more affected by predation than food. Removal of angelfishes by fishing may result in sponges overgrowing and killing the corals that build coral reefs.

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                  • Raccoon Thief

                    00:51

                    from RECONYX, Inc. / Added

                    2,075 Plays / / 0 Comments

                    Raccoon stealing eggs from a bluebird house.

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                    • Atlantic sailfish (Istiophorus albicans) hunt a ball of sardines

                      00:28

                      from Eric Cheng / Added

                      1,908 Plays / / 0 Comments

                      Atlantic sailfish (Istiophorus albicans) hunt a ball of sardines in the waters off of Isla Mujeres, Mexico. January 16, 2010.

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