Videos!

Daily Themes:

Life On A Research Vessel – download


Core Sampling – download or stream

Sampling the Water Column – download or stream


Animal Diversity – download or stream


Food Webs! – download or stream


Additional Videos:

CalEchoes Highlights

Longitude & Latitude - download or stream


9 Responses to Videos!

  1. Khaila Pickering says:

    Referring to the Longitude and Latitude video: I was curious as to if you use the system of longitude and latitude daily on your cruise to find where the ship is located? Do you also mark on the charts where you find abundancies of certain species?

  2. 2 period CPE says:

    we looked at the photos of the ocean life…how big will the octopus get??? how did you get all these creatures/animals??? :) will you put the creatures back in the ocean, or bring them back and study them??? see you soon!!! :)

    • Diana Tucker says:

      We got most of these animals using large nets that can go almost to the bottom of the ocean. The octopus was released but everything else is going into a collection at Scripps Institution.

  3. calechoes says:

    The latitude and longitude is calculated daily, however the easiest way to do it on board is through GPS. The researchers have in fact selected specific areas where they would like to sample. Sometimes they know what it is they will find, but there’s always surprises.

  4. David Golembiowski says:

    Hello Scientists,
    I am one of Mrs. Tuckers’ students, and we watched in class the Picasa slideshow about the different forms of marine life that were showed. I’m curious to know what types of fish those were and where the came from? I remember our substitute teacher explaining to us how there was a fish that (was from the pictures) has eyes that will migrate to one side of its body, and I would like to know how that is even possible?

  5. Ben Neal says:

    There were a number of different species of fish that we caught in the IKMT (midwater trawl), and at least three were flatfish, or fish that live on the benthos (the bottom), and have evolved a flat form with both eyes on the same side of their heads. These fish have a planktonic (free in the water column) larval stage which is very similar to most other fish, specifically in that they do NOT have both eyes on the same side of their heads during this developmental stage. Just before the larvae become juveniles and settle on the bottom one of the eyes begins to migrate over (the diversity of life is amazing!). Halibut, soles, flounder, and turbot are just a few of the common names of this group of fishes (of the Order Pleuronectiformes). There are both right-eyed and left-eyed flatfish, and some species can be either. All the flatfish show this same development, and some eventually reach extraordinary sizes (the Alaskan halibut gets up to 500 pounds). See the example of the juvenile flatfish (the turbot) on the Picasa site (in a small glass dish) to see how these fish look once they settle on the bottom.

    As you consider the remarkable nature of this larval-to-adult progression, remember that you yourself once had pharyngeal gills (in your early embryonic development). Most animals, in their adult forms, look nothing like their various and complex developmental stages. Furthermore, it is notable that in the adult forms there is remarkable evolutionary adaptation and diversity, as exemplified by these flatfish.

    For a further amazing reproductive story from the fishes, someday look up the larval progression of the American eel . . . . they live in fresh water, and go way out to spawn in the middle of the ocean (also amazing!).

  6. alec lunney says:

    What do the tiniest creatures in the marine food web eat? I am curious to find out.

  7. Miranda Crowley says:

    What species most recently became extinct that majorly effected the marine food web?

    • calechoes says:

      From Dr. Richard Norris:
      I’d say the that the issue is not extinction (as in gone everywhere) but “ecological extinction” in which species have been reduced to such an extent that they no longer perform their natural ecological functions. There are, sadly, many examples of “ecologically extinct” species. Some examples include sea cows (which used to eat the sea grass meadows down to a golf-course like turf all over the Gulf of Mexico), sharks on many Pacific islands (which used to keep all the little grazing fish so scared that they would not venture far from their homes inside corals; the disappearance of sharks has lead to much more venturesome little fish which have greatly changed algal cover on many reefs), invertebrate-eating fish (that used to suppress the growth of sea urchins; in the absence of the fish, urchin populations have exploded in various marine environments, completely eating themselves out of house and home), cod (which collapsed as viable populations in Maine and Atlantic Canada because of severe over fishing. With the loss of cod, the lobster population (which cod used to eat) exploded (one case where we might think that Ecological extinction was not a complete negative thing for us!).

      So far, there have been relatively few extinctions of modern animals (although there have been examples like Steller’s sea cows, many populations of salt water crocodiles, monk seals and more). But, although extinctions are not overwhelming yet, “ecological extinctions” are becoming increasingly common.

Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out / Change )

Twitter picture

You are commenting using your Twitter account. Log Out / Change )

Facebook photo

You are commenting using your Facebook account. Log Out / Change )

Google+ photo

You are commenting using your Google+ account. Log Out / Change )

Connecting to %s