Marine Reptiles
Because reptiles are "ectothermic," they must rely on this to regulate their body heat.
Environment
Marine plants and algae produce this specific gas, which is vital for us to breathe.
Oxygen
This is the largest animal phylum and includes creatures like crabs and shrimp.
Antropoda
To grow larger, a crustacean must go through this process of shedding its exoskeleton.
Molting
This microscopic phytoplankton sits at the very base of the ocean food chain.
Phytoplankton
Marine iguanas perform this action to expel excess salt from their bodies.
Sneeze
Unlike true plants, algae are missing this internal "vein" system.
Vascular System
Echinoderms like the sea star use this unique system for both moving and feeding.
Water Vascular System
This leaf-like part of kelp is the primary site for catching sunlight.
Blade
These microscopic organisms have intricate shells made of silica, which is essentially glass.
Diatoms
This factor is the primary determinant of whether a sea turtle embryo becomes male or female.
Temperature
This is the only marine plant that lives entirely underwater and produces flowers.
Seagrass
These are the stinging cells found in the tentacles of jellies and corals.
Nematocyst
Most marine reptiles are "oviparous," which means they reproduce in this way.
Lay eggs
This is the only location on Earth where you can find alligators and crocodiles living in the same habitat.
Florida Everglades
This specific sea turtle is the largest species and survives on a diet of mostly jellyfish.
Leatherback
This gas-filled bladder helps seaweed float toward the sunlight for photosynthesis.
Pneumatocyst
This "living fossil" is a cephalopod known for its iconic spiral shell.
Chambered Nautilus
This bell-shaped body form of a Cnidarian is designed to drift in the current.
Medusa
Most marine invertebrates reproduce through this process of releasing eggs and sperm into the open water.
Spawning
True sea snakes are distinguished from sea kraits because they do this in the water.
Give Live Birth (viviparous)
This term describes the overgrowth of algae caused by an excess of nutrients in the water.
Eutrophication
This phylum is distinct from Cnidarians and specifically contains "comb jellies".
Ctenophora
Sponges get their food by filtering these out of the surrounding water.
Microscopic particles
This term describes a drastic change on a reef where corals are overtaken and replaced by macroalgae.
Phase Shift