marine food web.. seals?

Question

are they decomposers, consumers, or producers? carnivores, herbivores, scavenger, or omnivore? anything else as in what else can they be classified as? and please explain why they are what they are classified as. :]

Answer 1

Here are some things I found out:

Seals and sea lions are top predators in the ocean. Other than people and killer whales, and sometimes large sharks, they are not preyed upon
http://oceanlink.island.net/oinfo/foodweb/sealion.html

According to this chart, they can also be prey for whales http://www.econguru.com/fundamentals_of_ecology/foodwebs-trophiclevels.html

Top predators occupy two trophic levels, the first contains porpoises, seal and sea lions, mackerel shark and sea birds, and the very top predator, occupying trophic level six, is the killer whale.

Organisms which consume the same food source will be in competition when food becomes scarce. For instance, killer whales, porpoises and seals/sea lions may compete for salmon if other items of food become scarce. The impact of competition for a food source will be greatest for those animals which have only one type of prey such as seals/sea lions or lancet fish in this particular food web representation. Omnivory is prevalent in predators: killer whales prey on seals and mackerel shark in the trophic level below them but they also eat salmon and sea birds from the trophic level below this; sea birds consume squid from trophic level 4 and anchovies from trophic level 3, and so on.
http://www.lifesciences.napier.ac.uk/teaching/MB/Pelweb02.html

Answer 2

Seals and sealions eat squid, fish, krill, crustaceae, penguins and other seabirds depending on the species and location.