fish
there are over ------ known species of fish
30000
octopi have ------ brains
9
there are over -------- species of eels
400
whales are up to ------- ft long
100
halibut means
holy flatfish
octopi have ---- hearts
3
--------- eels could kill a horse
electric
62,000-85,000 ------- whales worldwide.
beluga
the oldest known fish is ------ years old
65
The venom of a ---- octopus can be fatal to humans.
blue-ringed octopus
Eels can live for years or more
70
------- whales are the species most threatened by illegal commercial whaling.
Minke
Since a fish’s ---- is not attached to its skull, many fishes can shoot their ------- forward like a spring to catch startled prey
jaw mouth
Octopuses are believed to be the ------ invertebrate on the planet.
smartest
Most eels are ambush predators. This means they get their food by waiting for prey to come by and seizing it with an abrupt, -------- motion.
snakelike
--------- whales are some of the fastest swimmers of the whale community.
sei
------- are the only fish that have eyelids
sharks
Octopuses are the only marine animal that can open a ------
jar
There are also freshwater eels living in ----- and ------
lakes rivers
------- whales are the largest animals ever known to have lived on Earth.
blue