Some jellyfish do meet the definition of biologic immortality, but lobsters do not make the cut. What we're talking about here is "biological immortality", although many biologists would probably rather we didn't use the phrase. As they age, gators and crocs lose strength and overall body condition just like us humans. Starfish depend on saltwater to keep them alive and dry out and die when out of the water. PLEASE up the quality to the highest level to watch. The fact is that they can only be in marine environment, and if they stay out of these waters for a long time they could easily die, since their bodies have a system that helps them have an electrolyte control that only allows them to live in salty waters. I promise you'll like it better. Are Jellyfish and Lobsters Biologically Immortal? All Dolphins have a different whistle. The starfish that did NOT die were a red knob starfish, and a sand sifting starfish. Asked in Mammals , Starfish A starfish can only live on the and for a very short time before they die. They also run the risk of becoming food for plankton- and algae-loving animals like whales. Starfish babies are extremely tiny and nearly invisible to the naked eye; they measure a whopping 1 millimeter. Water testing at time of red starfish death: 1.24 salinity, 0 ammonia, 0 nitrite, 0 nitrate, 8.0 ph. If it is split in half, both halves live and can come together again. ... Starfish Begin Reproduction at the Age of Two Years Old. And if the star is very small, with a mass only a tenth that of the Sun, it can keep fusing hydrogen for up to a trillion years, longer than the current age of the universe. For starters starfish do not have a brain, however they are able to feel and make decisions using their senses. Starfish tend to live for around 3-5 years, and some in aquariums and such like are known to live up to the age of around 8 years, to my knowledge pretty much every animal can die of natural causes, else we'd almost certainly be recording starfish at a much greater age than 8. These teenage starfish prefer to make their homes hiding under reef rocks and rubble, far from predators, until they are large enough to travel in search of food. 20 Facts about Starfish - Characteristics, further information about life of starfishes in deep ocean ecosystems, include pictures. Most marine animals don’t find calcified adult sea stars very tasty, however infant or juvenile starfish sometimes … When it comes to starfish they have a number of interesting features that make them so fascinating to people. So once they are put out of their habitat and placed into fresh water, they will quickly die. During this time, these tiny sea star larvae feed on miniscule plants and animals floating nearby in the ocean. A starfish can interpret its environment, look for food and respond to pain or danger by trying to move away or avoiding it. British Columbia, Canada waters are becoming engorged with lifeless starfish and investigators do not have any idea what is causing them to perish. They are 98 % water. ... Starfish … Lobsters do not slow down, weaken, or lose fertility with age. Starfish can reproduce asexually and by spawning. Jellyfish evaporate in the sun. The starfish are carnivorous, scavenging and even detritivore.