You might think that
당신은 생각할지도 모른다, (무엇을? : that)
every animal which lives in the water
모든 동물, (어떤? : which), 물속에 사는 (모든 동물이) 
can swim but that is not the case!
헤엄칠 수 있다고, 그러나 그것이 꼭 사실인 것은 아니다.
Some aquatic animals can only scoot or creep around,
어떤 수중 동물들은 잽싸게 움직이거나 기어 다닐 수만 있고,
and many aquatic creatures can only float, moving
많은 수중 생물들은 떠다닐 수만 있다, 그리고 이동한다,
wherever the water takes them.
어디로든, 물이 그들을 데려가는 (어디로든).
We call animals that can swim nekton
우리는 동물들을 부른다, (어떤? : that) 헤엄칠 수 있는 (동물들을), 넥턴이라고,
which comes from the Greek word
이 말(which)은 그리스어에서 유래된 것인데,
that means “swimming.”
그것(that)은 의미한다, “헤엄치기”를.
They get from one place to another
그것들(넥턴 동물들)은 옮겨간다, 한 장소에서 다른 장소로.
by propelling, gliding, or paddling through the water.
밀고, 미끄러지거나 저어나감으로써, 물을 헤치면서
They usually have fins or flippers.
그것들은 보통 가지고 있다, 지느러미와 지느러미 발을.
Whales, seals, fishes, sea snakes, turtles, octopuses, and squids
고래, 물개, 물고기, 바다뱀, 거북, 문어, 그리고 오징어들은
are all nektonic animals.
모두 넥터닉(유영)동물이다.
Animals that don’t swim but
동물들 (that : 어떤?), 헤엄치지 않지만,
scurry, crawl, hop, scoot, burrow, or slither across the bottom of a body of water
종종걸음 치고, 기고, 뛰고, 파고 들거나 미끄러지듯 움직이는, 물 밑바닥을 가로질러서
are called benthos or benthic animals.
(그런 동물들은) 불린다, 벤토스 또는 벤틱(해저) 동물이라고.
Even animals like sponges
스펀지 같은 동물들,
that attach themselves to the ocean bottom and don’t move around
(that : 어떤?) 자신들을 바다 밑바닥에 붙이고 돌아다니지 않는 (스펀지 같은 동물들)조차도
are a part of the benthos.
벤토스(해저)동물 중의 하나이다.
This word comes from a Greek word
이 말(Benthos)은 그리스어에서 유래된 것으로,
that means “depths of the sea.”
그것은 의미한다, “깊은 해저”를.
Can you think of an animal that might be benthic?
당신은 동물을 생각해낼 수 있는가, (that : 어떤?) 벤틱일 것 같은?
Crabs, lobsters, sea snails, clams, and sea stars are examples of benthic creatures.
게, 가재, 바다 달팽이, 조개, 그리고 불가사리들은 벤틱(해저) 생물의 예이다.

How can you tell if an animal is benthic?
어떻게 당신은 말할 수 있는가, 어떤 동물이 벤틱인지를?
Is it always benthic if it sits on the bottom of a lake or ocean?
그것은 항상 벤틱일까, 호수나 바다 밑바닥에 앉으면?
No. Some fish, like flounder and stingrays,
아니다. 가자미류나 가오리류 같은 물고기들은
rest on the floor of the ocean for a long period of time,
바다 밑바닥에서 쉰다, 오랜 기간 동안,
but they can also swim form one place to another.
하지만 그것들은 헤엄칠 수도 있다, 한 장소에서 다른 장소로.
Because they can swim, they are nektonic animals.
그것들이 헤엄칠 수 있기 때문에, 그것들은 넥터닉(swimming : 유영) 동물이다.
Benthic animals cannot swim from one place to another.
벤틱 동물은 헤엄칠 수 없다, 한 장소에서 다른 장소로.
Lobsters and crabs, for example, must walk across the bottom of the ocean.
가령, 가재나 게들은 반드시 걸어야만 한다, 바다 밑바닥을 가로질러서.
Because they are unable to freely swim about the ocean,
그것들이 바다를 자유롭게 헤엄치고 돌아다닐 수 없기 때문에,
they are benthic animals.
그것들은 벤틱(depths of the sea : 해저)동물이다.

You might think that every animal which lives in the water can swim, but that is not the case! Some aquatic animals can only scoot or creep around, and many aquatic creatures can only float, moving wherever the water takes them. We call animals that can swim nekton which comes from the Greek word that means “swimming.” They get from one place to another by propelling, gliding, or paddling through the water. They usually have fins or flippers. Whales, seals, fishes, sea snakes, turtles, octopuses, and squids are all nektonic animals.

Animals that don’t swim but scurry, crawl, hop, scoot, burrow, or slither across the bottom of a body of water are called benthos, or benthic animals. Even animals like sponges that attach themselves to the ocean bottom and don’t move around are a part of the benthos. This word comes from a Greek word that means “depths of the sea.” Can you think of an animal that might be benthic? Crabs, lobsters, sea snails, clams, and sea stars are examples of benthic creatures.

How can you tell if an animal is benthic? Is it always benthic if it sits on the bottom of a lake or ocean? No. Some fish, like flounder and stingrays, rest on the floor of the ocean for a long period of time, but they can also swim form one place to another. Because they can swim, they are nektonic animals. Benthic animals cannot swim form one place to another. Lobsters and crabs, for example, must walk across the bottom of the ocean. Because they are unable to freely swim about the ocean, they are benthic animals.